Software; computer software; computer software for collecting, transmitting, storing, retrieving and editing data, images, photographs, videos and documents; computer software for viewing, sharing, and storing photo data; computer software that enables processing, transmitting, and printing of photographic images; computer software that enables data conversion of voice, music, still and moving images to two-dimensional code; application software; application software for collecting, transmitting, storing, retrieving and editing data, images, photos, videos and documents; application software for viewing, sharing, and storing photo data; application software that enables processing, transmitting, and printing of photographic images; application software that enables data conversion of voice, music, still and moving images to two-dimensional code; computer programs; computer hardware and firmware; image sensors, other than for medical use; image intensifiers; microprocessors; electronic cards for processing images; computers; computer peripheral devices; tablet computers; computer terminals; scanners; electronic components; data communication hardware; computer hardware for telecommunications; electronic communications apparatus; electronic communications instruments; electronic components used in apparatus; electronic components used in machines; electronic data processing equipment; electronic data processing apparatus; information technology and audio-visual, multimedia and photographic devices; audio recorders; video recorders; tape recorders; sound transmitting apparatus; sound reproduction apparatus; telecommunication apparatus and instruments; telecommunication machines and implements; telecommunication devices and apparatus; Digital cameras; Videocameras [camcorders]; cinematographic cameras; projectors; digital photo frames; surveillance cameras; personal digital assistants; humanoid robots with artificial intelligence for use in scientific research; photo-copying machines; disposable cameras; photographic cameras for the instant production of pictures; cameras for self-developing film; film cameras; photographic cameras; still cameras; cameras; camera lenses; parts and fittings for cameras; mount adapters for cameras; bags adapted for cameras; bags for cameras and photographic equipment; cases adapted for cameras; straps for cameras; handgrips for cameras; camera stands; photographic filters; light filters for cameras; UV filters for digital cameras; camera flashes; tripods for cameras; cinematographic machines and apparatus; optical apparatus and instruments; photographic machines and apparatus; photo printers; downloadable image files; downloadable video files; downloadable music files; downloadable audio files; downloadable multimedia files; electronic publications; computer programs for downloading, managing, processing, and reproducing music data, video data, text data, and still image data; storage media recording still and moving images; electric wires and cables; battery chargers.

Management and compilation of computerised databases; updating and maintenance of data in computer databases; systemization of information into computer databases; computerized file management; computerized management of digital photographs and image data; file management by converting photographs and documents into electronic data, storing them, and outputting them as needed; arranging and conducting of commercial events; organization of exhibitions for commercial or advertising purposes; office functions, namely filing, in particular documents or magnetic tapes; compilation and systemization of written communications and data; systemization of image data into computer databases; rental of photocopying machines; sales promotion for others; business operation of data processing apparatus, namely, computers, typewriters, data processing machines and other similar office machines for others; Data processing services using artificial intelligence.

Disposable wipes impregnated with cleansing chemicals or compounds for domestic and industrial use

Disposable wipes impregnated with sanitizing chemicals or compounds for domestic and industrial use

building materials of metal for roofs; roof coverings of metal; roofing of metal; metal roofing panels; roofing panels of metal; metal materials for building; construction materials of metal for roofs; metal roofing

Apps in respect of betting, wagering, gambling and gaming including lotteries; computer software in respect of betting, wagering, gambling and gaming including, lotteries; electronic publications (downloadable) in respect of betting, wagering, gambling and gaming including lotteries; computer hardware for betting, wagering, gambling and gaming including, lotteries; apparatus in this class used in the conduct of betting, wagering, gambling and gaming including, lotteries

Paper and printed matter; paper articles used in connection with lotto and other forms of gambling; stationery

aluminium; extruded aluminium sections; extruded aluminium profiles

Plastic drinkware sold empty, namely, reusable water bottles, travel mugs, sports bottles, and tumblers; stainless steel drinkware sold empty, namely, reusable water bottles, travel mugs, sports bottles and tumblers; glass drinkware sold empty, namely, reusable water bottles, travel mugs, sports bottles and tumblers; beverage containers, namely, thermal insulated containers and drinking bottles sold empty.

3-in-1 hair shampoos; beauty products for the hair; beauty preparations for the hair; bleaching preparations for the hair; bleaching products for the hair; cleansing conditioners for the hair for use in conditioner-only washing; cleansing conditioners for use in conditioner-only washing of hair; color rinses for hair; color rinses for the hair; color-removing preparations for hair; colorants for the hair; coloring lotions for the hair; colour rinses for hair; colour rinses for the hair; colour-removing preparations for hair; colourants for the hair; colouring lotions for the hair; conditioners for the hair; cosmetic hair care preparations; cosmetic hair dressing preparations; cosmetic hair lotions; cosmetic hair regrowth inhibiting preparations; cosmetic preparations for hair care; cosmetic preparations for the hair and scalp; cosmetic products for the hair and scalp; cosmetics for the use on the hair; creams for the hair; dyes for the hair; gels being hair styling aids; gels for use on the hair; gels, sprays, mousses and balms for hair styling and hair care; hair and body shampoos; hair and body wash; hair and scalp masks; hair balm; hair balms; hair balsam; hair balsams; hair beauty masks; hair bleach; hair bleaches; hair bleaching preparations; hair bleaching products; hair care and cleaning preparations; hair care creams; hair care creams for cosmetic purposes; hair care creams for cosmetic use; hair care lotions; hair care lotions for cosmetic purposes; hair care lotions for cosmetic use; hair care masks; hair care preparations; hair care preparations and products; hair care preparations consisting of organic coconut virgin oil and coconut virgin oil; hair care preparations, not for medical purposes; hair care serums; hair care waxes; hair cleaning liquid soap; hair cleaning preparations; hair color; hair color removers; hair colorants; hair coloring; hair coloring and hair decolorant preparations; hair coloring crayons; hair coloring preparations; hair colour; hair colour removers; hair colourants; hair colouring; hair colouring and hair decolorant preparations; hair colouring crayons; hair colouring preparations; hair combing oil; hair conditioner; hair conditioner bars; hair conditioner for babies; hair conditioners; hair conditioners for babies; hair cream; hair creams; hair creams for cosmetic purposes; hair creams for cosmetic use; hair curling preparations; hair desiccating treatments for cosmetic purposes; hair desiccating treatments for cosmetic use; hair dye; hair dyeing preparations; hair dyes; hair dyes and bleaching products; hair emollients; hair emollients for cosmetic purposes; hair emollients for cosmetic use; hair fixers; hair fixers [hair styling preparations]; hair fixing oil; hair frosting preparations; hair frosting preparations [highlighting preparations]; hair frosts; hair frosts [highlighting preparations]; hair gel; hair gel and hair mousse; hair gels; hair gels and hair sprays; hair glaze; hair grooming preparations; hair lacquers; hair lighteners; hair lotion; hair lotions; hair mascara; hair masks; hair moisturisers; hair moisturizers; hair mousse; hair mousse and hair gel; hair mousses; hair mousses [toiletries]; hair nourish preparation; hair nourish preparations; hair nourishers; hair nourishers for cosmetic purposes; hair nourishers for cosmetic use; hair oil; hair oils; hair perming treatments; hair piece bonding glue; hair pomades; hair pomades for cosmetic purposes; hair pomades for cosmetic use; hair powder; hair products and treatments; hair protection creams; hair protection creams, non-medicated; hair protection gels; hair protection lotions; hair protection mousse; hair relaxers; hair relaxing preparations; hair removal and shaving preparations; hair removal and shaving products; hair removal gels; hair removal preparations; hair removal sprays; hair removing cream; hair removing creams; hair removing gels; hair removing sprays; hair rinses; hair rinses [shampoo-conditioners]; hair rinses for cosmetic purposes; hair rinses for cosmetic use; hair setting preparations; hair shampoo; hair shampoos; hair shampoos and conditioners; hair shaving and removal preparations; hair spray; hair sprays; hair sprays and hair gels; hair straightening preparations; hair straightening treatments; hair strengthening treatment lotions; hair styling gel; hair styling gels; hair styling masks; hair styling mousse; hair styling mousse and gels; hair styling oil; hair styling preparations; hair styling serums; hair styling spray; hair styling waxes; hair texturizers; hair thickening products for cosmetic purposes; hair thickening products for cosmetic use; hair tinting preparations; hair tints; hair tonic; hair tonic for cosmetic purposes; hair tonic for cosmetic use; hair tonics; hair tonics for cosmetic purposes; hair tonics for cosmetic use; hair treatment preparations; hair wash preparations; hair waving and hair setting preparations; hair waving and setting preparations; hair waving lotions; hair waving preparations; hair waving treatments for cosmetic purposes; hair waving treatments for cosmetic use; hair wax; hair-coloring and hair decolorant preparations; hair-colouring and hair decolorant preparations; hair-removing preparations; hair-washing powder; hemp-based hair conditioners; hemp-based hair shampoos; hydrogen peroxide for use on the hair; keratin hair treatments; lotions, creams and preparations for care of the face, body, scalp, nails and hair; mousses [toiletries] for hair styling; mousses [toiletries] for use in styling the hair; mousses being hair styling aids; non-medicated hair balms; non-medicated hair care preparations; non-medicated hair lotion; non-medicated hair lotions; non-medicated hair preparations; non-medicated hair protection creams; non-medicated hair restoration lotion; non-medicated hair restoration lotions; non-medicated hair treatment preparations for cosmetic purposes; non-medicated hair treatment preparations for cosmetic use; non-medicated lotions for the hair; non-medicated preparations for the care of skin, hair and scalp; non-medicated preparations for use on the hair; oil baths for hair care; oil baths for hair care for cosmetic purposes; oil baths for hair care for cosmetic use; oils for hair conditioning; perfumery, essential oils, cosmetics, hair lotions; perfumery, essential oils, non-medicated cosmetics, non-medicated hair lotions; permanent color treatment preparations for hair; permanent colour treatment preparations for hair; permanent hair straightening preparations; permanent waving and curling preparations for the hair; permanent waving preparations for the hair; preparations for cleaning, tinting, coloring, bleaching, setting and styling of hair; preparations for cleaning, tinting, colouring, bleaching, setting and styling of hair; preparations for cleaning, tinting, dyeing, bleaching, setting and permanent waving of hair; preparations for coloring the hair; preparations for colouring the hair; preparations for dyeing the hair; preparations for permanent hair curling; preparations for permanent hair curls; preparations for permanent hair waves; preparations for perming and setting the hair; preparations for protecting the hair from the sun; preparations for setting hair; preparations for styling the hair; preparations for the care of the scalp and hair; preparations for the cleaning, care and grooming of hair; preparations for the cleaning, care and grooming of the hair; preparations for the permanent color treatment of hair; preparations for the permanent colour treatment of hair; preparations for the permanent curling of hair; preparations for the permanent straightening of hair; preparations for the permanent waving and curling of hair; preparations for the permanent waving of hair; preparations for use in hair styling; preparations for use in styling the hair; preparations for waving the hair; shampoo for human hair; shampoos for human hair; shampoos for the hair; solid hair conditioner; solid hair conditioner bars; sprays being hair styling aids; styling gels for the hair; styling paste for hair; tints for the hair; waving preparations for the hair; wax for removing body hair; wax strips for removing body hair; wax treatments for the hair; waxes for hair care; bleaches for use on the hair; bintsuke-abura [Japanese hair fixing oil]; baby hair conditioners; baby hair conditioner; adhesives for false eyelashes, hair and nails; adhesives for affixing false hair; adhesive tapes for affixing false hair; Japanese hair fixing oil; 3-in-1 hair shampoo

hair growth shampoo; hair growth stimulants; hair growth stimulants for medical purposes; hair growth stimulants for medical use; medicated hair care preparations; medicated hair growth stimulants; medicated hair lotions; medicated lotions for the hair; medicinal hair growth preparations; medicinal hair growth stimulants; medicinal preparations for stimulating hair growth

benches; garden benches; picnic benches; patio benches; piano benches; benches [seats]; benches [furniture]; outdoor furniture, not of metal; electric piano keyboard benches; bench seats; picnic chairs; outdoor furniture of metal for arbours; street furniture being benches [furniture]; lawn chairs; outdoor benches; outdoor beds; outdoor furniture of plastic; outdoor tables; outdoor furniture; animal beds; beds for animals; inflatable beds for animals; dog beds; portable beds; outdoor chairs; beds; crates for transporting pets; metal crates for animal transportation; crates; outdoor sofas; outdoor cushions; portable beds for animals; inflatable pet beds; sleeping cooling mats for pets; sleeping pads [mats or cushions]; covers specially adapted for elevated beds for household pets; support pillows for use in baby seating; covers specially adapted for elevated beds for pets; sofa beds; cat beds; baby head support cushions; inflatable beds for pets; pet berths; pet cushions; cushions; cushions for lining pet crates; cushions [furniture]; travel cushions; beds, mattresses, pillows and cushions; mattress cushions; furniture; home furniture; pet grooming tables; grooming tables for pets; massage tables; tables; grooming tables for companion animals; cradles for household pets; elevated beds for household pets; beds for pets; portable beds for pets; pet beds; pet crates; couches for pets; sofas for pets; pet furniture; beds for household pets; pet houses; dog houses; dog houses [kennels]; doghouses; kennels for household pets; kennels for pets; bird houses; playhouses for pets; book supports; bookcases; book stands; bookshelves; index cabinets [furniture]; book holders [furniture]; file cabinets; shelves; book shelves; library shelves; shelves for books; show shelves; furniture shelves; book supports [furniture]; box shelves; shelf bars [furniture]; shelves for storage of plastic; shelves for storage; shelves for file cabinets; DVD file cabinets; CD file cabinets; shelves for storage made of plastics; storage racks; modular racks [furniture] adapted for storing DVDs; storage drawers [furniture]; beds with storage space; modular racks [furniture] adapted for the storage of DVDs; storage racks for double basses; metal storage cabinets; storage racks for storing paintings; moveable metal storage racks [furniture]; storage racks specially adapted for holding musical instruments; storage racks for guitars; CD storage racks [furniture]; toilet mirrors being hand-held mirrors; hand-held mirrors being toilet mirrors; hand mirrors [toilet mirrors]; hand-held mirrors [toilet mirrors]; toilet mirrors; toilet paper dispensers, not of metal; dispensers for toilet paper, not of metal; dispensers, not of metal, for toilet paper; paper towel dispensers, not of metal; towel dispensers, not of metal; outdoor furniture of wood for arbors; tool chests of plastic, empty; tool boxes of plastic, empty; boxes of wood or plastic; tool boxes of wood or plastic, empty; tool boxes of wood, empty; tool chests of wood or plastic, empty; tool chests of wood, empty; boxes of wood; wood boxes; wooden boxes; boxes made of wood; tool boxes, not of metal, sold empty; tool boxes, not of metal, empty; tool chests, not of metal [furniture]; tool boxes, not of metal [furniture]; tool chests not of metal [furniture]; furniture handles, not of metal

building and construction services; building; bridge building; boat building; assembly of prefabricated buildings; assembly of pre-fabricated buildings; apartment building construction; advisory services relating to the repair of buildings; advisory services relating to the renovation of buildings; advisory services relating to the maintenance, repair and renovation of buildings and other structures; advisory services relating to the maintenance of buildings; advisory services relating to the installation of building automation equipment; advisory services relating to the construction of buildings and other structures; advisory services relating to the construction of buildings; advisory services relating to the building renovations; advisory services relating to the building and repair of airports and airport facilities; advisory services relating to the building alterations; advisory services relating to the alteration of buildings; advisory services relating to building repair; advisory services relating to building refurbishment; advisory services relating to building demolition; advisory services relating to building construction; building and construction services provided by real estate entrepreneurs; building and demolition services; building and repair of airports and airport facilities; building and repair of houses; building caulking services; building cleaning; building cleaning services; building construction; building construction advisory services; building construction and demolition; building construction and demolition services; building construction and repair; building construction consultancy; building construction consultancy services; building construction services; building construction supervision services for building projects; building construction supervision; building construction supervision services for real estate projects; building construction supervision services relating to shopping centers, industrial complexes, office buildings, residential buildings and other real estate developments; building construction supervision services relating to shopping centres, industrial complexes, office buildings, residential buildings and other real estate developments; building consultancy; building consultancy services; building damp-proofing; building demolition; building dismantling; building dismantling services; building exterior cleaning; building exterior cleaning services; building inspection in the course of building construction; building insulating; building interior cleaning; building interior cleaning services; building maintenance; building maintenance and repair; building maintenance and repair of buildings; building maintenance and repair services provided by a handyman; building maintenance and repairs; building of apartment buildings; building of bridges; building of canal locks; building of commercial properties; building of houses; building of fair stalls and shops; building of naval ships; building of naval vessels; building of offices; building of railways; building of roads; building of schools; building of shops; building of trade fair and exhibition stands; building of underground structures; building project management [building construction supervision]; building project management [construction supervision]; building refurbishment services; building refurbishment; building rehabilitation; building rehabilitation services; building reinforcing; building renovation services; building renovation; building repair; building repair and maintenance; building restoration; building sealing; building sealing and caulking services; building services for charitable purposes; building washing; building washing services; cleaning of building exterior surfaces; cleaning of building exteriors and providing information relating thereto; cleaning of building exteriors; cleaning of building exteriors and provision of information relating thereto; cleaning of building interiors; cleaning of building interiors and exteriors; cleaning of building sites; cleaning of buildings; cleaning of buildings [exterior surface]; cleaning of buildings [interior]; cleaning of buildings, industrial sites and building sites; cleaning of commercial premises and office buildings; cleaning of exterior surfaces of buildings; cleaning of exterior surfaces of buildings and providing information relating thereto; cleaning of exterior surfaces of buildings and provision of information relating thereto; cleaning of external surfaces of buildings; cleaning of office buildings and commercial premises; construction and demolition of buildings; cleaning of public buildings; construction and demolition of buildings, roads, bridges, dams or transmission lines; construction and maintenance of building complexes, residential buildings, housing estates, commercial buildings, shopping centers, office buildings and parking structures; construction and maintenance of building complexes, residential buildings, housing estates, commercial buildings, shopping centres, office buildings and multi-storey car parks; construction and maintenance of buildings; construction and renovation of buildings; construction and renovation of buildings and other structures; construction and repair of buildings; construction and repair of buildings and other structures; construction and repair of residential buildings and houses; construction of apartment buildings; construction of building interiors; construction of buildings; construction of buildings and other structures; construction of buildings, dams and bridges; construction of buildings, roads, bridges and dams; construction of buildings, roads, bridges, dams or transmission lines; construction of commercial buildings; construction of energy efficient buildings and structures; construction of industrial buildings; construction of office buildings; construction of pre-fabricated buildings; construction of prefabricated buildings; construction of residential buildings; construction of residential and commercial buildings; construction project management [building construction supervision]; construction, maintenance and renovation of buildings; construction, maintenance and repair of transportable and prefabricated buildings; construction, maintenance, repair and renovation of buildings and factories; construction, repair and maintenance of buildings; construction, repair and maintenance of buildings, and providing information relating thereto; construction, repair and maintenance of buildings, and provision of information relating thereto; consultancy relating to building construction supervision; consultancy relating to painting of buildings; yacht building; washing of buildings; underwater building and construction; underground structure building; supervision of building renovation; supervision of building reconstruction; thermal insulating of buildings; supervision of building demolition; supervision of building construction; soil erosion control services rendered by building contractors; services for the washing of buildings; services for the cleaning of buildings; school building; road building; retrofitting of ventilating installations in buildings; retrofitting of heating, ventilating and air-conditioning installations in buildings; retrofitting of heating installations in buildings; retrofitting of air-conditioning installations in buildings; restoration of buildings; residential and commercial building construction; residential and building construction consulting; repair work on buildings; repair or maintenance of building equipment; repair of buildings; repair of building machines; repair of building equipment; repair and maintenance of shopping centres, industrial complexes, office buildings, residential buildings and other real estate developments; repair and maintenance of shopping centers, industrial complexes, office buildings, residential buildings and other real estate developments; repair and maintenance of road building machines; repair and maintenance of road building equipment; repair and maintenance of residential buildings; repair and maintenance of office buildings; repair and maintenance of mining, earth moving, road building, agricultural and farming equipment; repair and maintenance of buildings; repair and maintenance of building scaffolds, working and building platforms; rental of machines, tools and apparatus for use in building construction; rental of machines, tools and apparatus for building construction; rental of construction and building equipment; rental of building tools; rental of building scaffolds, working and building platforms; rental of building machines; rental of building machinery; rental of building equipment; renovation of buildings; renovation and restoration of buildings; renovation and maintenance of shopping centres, industrial complexes, office buildings, residential buildings and other real estate developments; renovation and maintenance of shopping centers, industrial complexes, office buildings, residential buildings and other real estate developments; renovating and building homes for low income families for charitable purposes; removing birds from residential and commercial buildings; removal of debris from buildings [construction services]; removal of debris from buildings; rehabilitation of buildings; refurbishment of buildings; real estate development [building and construction services]; railway building; public building cleaning services; public building cleaning; provision of information relating to the construction, repair and maintenance of buildings; provision of information relating to the cleaning of building exteriors; provision of information relating to building renovation; provision of information relating to building reconstruction; provision of information relating to building demolition; provision of information relating to building construction; provision of information relating to building cleaning; provision of information in relation to building construction; providing online information relating to the construction of buildings, and repair and installation services; providing online information relating to the construction of buildings; providing online information relating to building construction; providing on-line information relating to the construction of buildings; providing on-line information relating to building construction, and repair and installation services; providing on-line information relating to building construction; providing information relating to the construction, repair and maintenance of buildings; providing information relating to the construction of buildings, and repair and installation services; providing information relating to the cleaning of building exteriors; providing information relating to building renovation; providing information relating to building reconstruction; providing information relating to building demolition; providing information relating to building construction, and repair and installation services; providing information relating to building construction; providing information relating to building cleaning; providing building materials to rebuild homes and business premises for charitable purposes; providing building construction information via a website; providing building construction information via a web site; protection of buildings against pests and vermin; plastering and painting of building interiors; pier breakwater building; painting of buildings; on-site project management relating to the construction of buildings; on-site project management relating to building construction; on-site construction project management relating to the construction of buildings; on-site construction project management relating to building construction; on-site building project management [construction supervision]; on-site building project management; on site project management relating to the construction of buildings; on site project management relating to building construction; on site construction project management relating to the construction of buildings; on site construction project management relating to building construction; on site building project management [construction supervision]; on site building project management; office building; naval vessel building; naval ship building; maintenance of building machines; maintenance of building equipment; maintenance and repair services of public utilities in buildings; maintenance and repair of road building machines; maintenance of buildings; maintenance and repair of road building equipment; maintenance and repair of residential buildings; maintenance and repair of office buildings; maintenance and repair of mining, earth moving, road building, agricultural and farming equipment; maintenance and repair of buildings; maintenance and repair of building installations; maintenance and cleaning of buildings; interior refurbishment of buildings; installation of working and building platforms; installation of work and building platforms; installation of thermal insulation for buildings; installation, maintenance and repair of building automation equipment; installation, maintenance and repair of equipment and apparatus for use in road building; insulating buildings; insulating of buildings; installation of insulating materials in buildings, roofs and structures; installation of fixtures and fittings for buildings; installation of fittings for buildings; installation of electrical wiring for buildings; installation of building scaffolds, working and building platforms; installation of building scaffolds; installation of electrical apparatus for buildings; installation of building insulation; installation of building automation equipment; information services relating to the renovation of buildings; information services relating to the rehabilitation of buildings; information services relating to building renovation; information services relating to the refurbishment of buildings; information services relating to building rehabilitation; information services relating to building refurbishment; industrial building construction; house building and repair; house building; house and building demolition; glazing services for buildings; general building contractor services; fumigation of buildings against vermins; fumigation of buildings against vermin activity; fumigation of buildings against pests; fumigation of buildings against noxious animals; fumigating of buildings against vermins; fumigating of buildings against vermin activity; fumigating of buildings against pests; fumigating of buildings against noxious animals; ferry building; ferry boat building; erection of prefabricated buildings and structures; erection of prefabricated buildings; erection of pre-fabricated buildings and structures; erection of pre-fabricated buildings; dismantling of buildings; disinfecting of building interior surfaces; demolition of houses and buildings; demolition of buildings, roads, bridges, dams or transmission lines; demolition of buildings; damp-proofing to existing buildings; damp-proofing of buildings; damp-proofing [building]; custom construction of buildings; custom construction and building renovation; custom building construction; consultation relating to painting of buildings; consultation in building construction supervision; consultancy services relating to the repair of buildings; consultancy services relating to the construction of buildings; consultancy services relating to building repair; consultancy relating to the construction of buildings; consultancy relating to residential and building construction; consultancy services relating to building construction

Artificial intelligence as a service (AIAAS) featuring software utilizes artificial intelligence for building, training, evaluating, deploying, and optimizing models; Providing an online, non-downloadable, end-to-end artificial intelligence platform for all activities involved in the model development lifecycle