The document provides an overview of internal customer engagement, outlining key definitions, methodologies, and phases. It describes internal customer engagement as a cyclical process with three main regions: initial engagement to raise awareness of new solutions, engagement during migration and implementation, and engagement after adoption to maintain loyalty. Effective engagement requires communication, migration, support, and escalation plans along with targeting stakeholders at different organizational levels appropriately over time. The engagement approach evolves as solutions mature from individual-focused early on to more collaborative later on. Maintaining engagement throughout the product lifecycle is emphasized.