KEY CONCEPTS FOR PROJECT SCOPE MANAGEMENT
In the project context, the term ¡°scope¡± can refer to:
uuProduct scope. The features and functions that characterize a product, service, or result.
uuProject scope. The work performed to deliver a product, service, or result with the specified features and functions. The term ¡°project scope¡± is sometimes viewed as including product scope.
Project life cycles can range along a continuum from predictive approaches at one end to adaptive or agile approaches at the other. In a predictive life cycle, the project deliverables are defined at the beginning of the project and any changes to the scope are progressively managed. In an adaptive or agile life cycle, the deliverables are developed over multiple iterations where a detailed scope is defined and approved for each iteration when it begins.
Projects with adaptive life cycles are intended to respond to high levels of change and require ongoing stakeholder engagement. The overall scope of an adaptive project will be decomposed into a set of requirements and work to be performed, sometimes referred to as a product backlog. At the beginning of an iteration, the team will work to determine how many of the highest-priority items on the backlog list can be delivered within the next iteration. Three processes (Collect Requirements, Define Scope, and Create WBS) are repeated for each iteration. On the contrary, in a predictive project, these processes are performed toward the beginning of the project and updated as necessary, using the integrated change control process.
In an adaptive or agile life cycle, the sponsor and customer representatives should be continuously engaged with the project to provide feedback on deliverables as they are created and to ensure that the product backlog reflects their current needs. Two processes (Validate Scope and Control Scope) are repeated for each iteration. On the contrary, in a predictive project, Validate Scope occurs with each deliverable or phase review and Control Scope is an ongoing process.
In predictive projects, the scope baseline for the project is the approved version of the project scope statement, work breakdown structure (WBS), and its associated WBS dictionary. A baseline can be changed only through formal change control procedures and is used as a basis for comparison while performing Validate Scope and Control Scope processes as well as other controlling processes. Projects with adaptive life cycles use backlogs (including product requirements and user stories) to reflect their current needs.
Completion of the project scope is measured against the project management plan, while completion of the product scope is measured against the product requirements. The term ¡°requirement¡± is defined as a condition or capability that is required to be present in a product, service, or result to satisfy an agreement or other formally imposed specification.
Validate Scope is the process of formalizing acceptance of the completed project deliverables. The verified deliverables obtained from the Control Quality process are an input to the Validate Scope process. One of the outputs of Validate Scope is accepted deliverables that are formally signed off and approved by the authorized stakeholder. Therefore, the stakeholder needs to get involved early on during planning (sometimes initiating as well) and to provide inputs about quality of deliverables so that Control Quality can assess the performance and recommend necessary changes.
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