Informatica provides a single enterprise data integration platform to help organizations access, transform, and integrate data from various systems and deliver that information to transactional systems, business processes, and users. It supports activities like data warehousing, migration, consolidation, and metadata management. Informatica uses a server to extract data from sources, transform it using configured mappings, and load it into targets. It includes components like a repository service to manage metadata, integration service to execute workflows, and client tools for designing mappings and monitoring workflows.