25. Five engagement modes and five delivery stages

A modernization client enters through one of five engagement modes, each sized to the work the client is ready to commit to. The modes differ in how much of the work the client takes on. Documentation Only produces documentation and test scenarios from the legacy code, with no migration. Discovery and Documentation adds an inventory of the applications, maps of their dependencies, the business rules, and review material for subject-matter experts. Migration Readiness adds a scope for each module, its place in the new system, the order of migration, and the marked-up specification. Full Modernization runs the whole pipeline, over quarters to years. Maintain, Operate and Convergence keeps the knowledge graph up to date on the modern system. Each mode addresses a defined part of the modernization tax, and a client may stop at any mode. Full Modernization runs in five stages: discovery and analysis, building the graphs, migrating one first module, migrating the rest, and user acceptance testing with deployment. While the first module is migrated, subject-matter experts review the output and tune the agents to the project.

On the site: Why Engagement Modes · The Five Engagement Modes · MTT Components Addressed by Each Mode