Recently, the government published a new tax law giving companies one year to implement the changes. A project was initiated to change the accounting system. Which delivery approach is most suitable in this context?

The most suitable delivery approach is determined by the nature of the project's requirements and constraints. In this scenario, a new tax law has been published, which means the requirements for the accounting system changes are clearly defined, fixed, and unlikely to change. A predictive life cycle is optimal when the scope of work can be well-understood and planned in detail upfront. This allows the project team to create a comprehensive plan to ensure all legal requirements are met by the firm one-year deadline, which is critical for compliance projects.

1. Project Management Institute. (2021). A Guide to the Project Management Body of Knowledge (PMBOK® Guide) – Seventh Edition. Project Management Institute, Inc. See Section 2.5.3, "Development Approach and Life Cycle," which states, "Projects with stable requirements and low levels of risk can benefit from a predictive approach." The scenario describes stable requirements derived from a published law.

2. Project Management Institute. (2021). The Standard for Project Management (ANSI/PMI 99-001-2021). Project Management Institute, Inc. See Section 4.3, "Delivery," which explains that a predictive approach is appropriate when "the project scope can be defined early in the project life cycle." The published tax law allows for the scope to be defined early.