Software as a Service (SaaS) services featuring software for resolution of the identity of individual consumers based on data pertaining to the consumers across multiple marketing channels, devices, and marketing platforms, and mapping identifiers for a known individual consumer to the channels, devices, and marketing platforms on which that individual consumer can be found, in order to execute and support multichannel marketing efforts, targeting specific consumers for marketing purposes, measurement of marketing campaign results, personalisation of marketing messages to individual consumers, monetisation of consumer marketing data, and consumer marketing data analytics