Name stages of the system development lifecycle and shortly explain the purpose of each stage?

Answer 1

Any System or Project usually has 5 stages in its development lifecycle. They are:

• Initiating
• Planning
• Executing
• Monitoring & Controlling
• Closing

Initiating a Project:

This stage defines and authorizes the project. The project manager is named, and the project is officially launched through a signed document called the project charter, which contains items such as the purpose of the project, a high-level product description, a summary of the milestone schedule, and a business case for the project. Another outcome of this stage is a document called the stakeholder register, which identifies the project stakeholders and important information about them. The processes used to perform this stage fall into a group called the initiating process group.

Planning a Project:

In this stage, you as the project manager, along with the project management team, refine the project objectives and requirements and develop the project management plan, which is a collection of several plans that constitute a course of actions required to achieve the objectives and meet the requirements of the project. The project scope is finalized with the project scope statement. The project management plan, the outcome of this stage, contains subsidiary plans, such as a project scope management plan, a schedule management plan, and a quality management plan. The processes used to perform this stage fall into a group called the planning process group.

Executing a Project:

In this stage, you as the project manager, implement the project management plan, and the project team performs the work scheduled in the planning stage. You coordinate all the activities being performed to achieve the project objectives and meet the project requirements. Of course, the main output of any project is the project deliverables. Approved changes, recommendations, and defect repairs are also implemented in this stage. But where do these changes and recommendations come from? They arise from monitoring and controlling the project. The stakeholders can also suggest changes, which must go through an approval process before implementation. The project execution is performed using the processes that fall into a group called the executing process group.

Monitoring and controlling:

You monitor and control the project through its lifecycle, including the execution stage. Monitoring and controlling includes defending the project against scope creep (unapproved changes to the project scope), monitoring the project progress and performance to identify variance from the plan, and recommending preventive and corrective actions to bring the project in line with the planned expectations in the approved project management plan. Requests for changes, such as change to the project scope, are also included in this stage; they can come from you or from any other project stakeholder. The changes must go through an approval process, and only the approved changes are implemented. The processes used in this stage fall into a group called the monitoring and controlling process group.

Closing a Project:

In this stage, you manage the formal acceptance of the project product, close any contracts involved, and bring the project to an end by disbanding the project team. Closing the project includes conducting a project review for lessons learned and possibly turning over the outcome of the project to another group, such as the maintenance or operations group.

This stage is applicable even for Terminated/Cancelled Projects. Terminated projects (that is, projects cancelled before completion) should also go through the closing stage. The processes used to perform the closing stage fall into the group called the closing process group.

Don't forget the last, but not the least, task of the closing stage: Project Closure Party!!!