Project Delivery Phases: The Project Lifecycle Explained for 2026

In a predictive lifecycle each phase runs once, sequentially, with a stage gate between. In an agile lifecycle every sprint contains a mini version of all five phases. In a hybrid, some workstreams (regulated hardware) run predictive while others (customer-facing app) run agile, and the PM synchronises them at release boundaries.

Closure. Once the deliverable ships, energy drops and teams skip lessons learned, formal acceptance and archive. That is exactly when the value from a project is captured for the next one. PRINCE2 makes closure a formal process for a reason: without it, every future project pays the tax of not knowing what worked.

• PMP: five Process Groups mapped to 10 Knowledge Areas, integrated across the People, Process and Business Environment domains
• PRINCE2: seven processes anchored to Starting Up, Initiation, Directing, Controlling, Managing Product Delivery, Managing Stage Boundaries and Closing
• Both cover the same underlying lifecycle with different vocabulary and emphasis
• PMP is stronger on integrated change; PRINCE2 is stronger on stage-gate governance

Draw it on one page at kickoff. Put dates, gates and decision owners on the diagram. Print it. Refer to it in every steering meeting. That single artifact reduces mid-project confusion more than any tool feature ever will.