Every project, regardless of size or methodology, moves through a series of phases from beginning to end. This sequence is called the project lifecycle. Understanding it helps project managers know what to focus on at each stage.
The Five Phase Groups
The PMBOK Guide defines five process groups that map to the lifecycle of a project:
1. Initiating
The project is formally authorized. A project charter is created, the sponsor is identified, and high-level objectives are defined. The question at this stage: "Why are we doing this?"
2. Planning
The roadmap is built. This includes defining scope, creating schedules, estimating costs, identifying risks, and establishing how the team will communicate. This is typically the most documentation-heavy phase.
3. Executing
The actual work happens here. The team produces deliverables, manages stakeholders, and acquires resources. The project manager's role shifts to coordination and removing blockers.
4. Monitoring & Controlling
This runs in parallel with execution. Performance is measured against the plan using tools like Earned Value Management and KPIs. Any deviations trigger change requests through a formal change control process.
5. Closing
Deliverables are verified, lessons learned are documented, contracts are closed, and the project is formally handed over to operations. The question here: "Did we achieve what we set out to do?"