Phases and Threads 
At the highest level, methods are structured in phases
and
threads.
Phase identifier
The identifier for a phase is a number. For example:
- 1
Plan and Analyze
- 2
Design
- 3
Build
- 4
Deliver
- 5
Operate
Thread identifier
The identifier for a phase is two letters. For example:
- PM
Project Management
- SO
Strategy and Operations
- VL
Value
- PE
People
- IT
Information Technology
- SC
Security and Controls