Software as a service (SaaS) services featuring software for creating, managing, and maintaining customer identifier data in a customer data platform (CDP) database or other systems; providing temporary use of non-downloadable cloud-based software for use in customer identity management and data integration; providing temporary use of non-downloadable software for consolidating and reconciling customer data from multiple sources to create a single, accurate, and comprehensive customer profile; providing temporary use of non-downloadable software for customer data management, including identity resolution, data deduplication, and data enrichment; providing temporary use of non-downloadable software for generating and maintaining a persistent customer identifier to enhance customer online commerce data analysis and personalized customer interactions