Project Scope Definition is one of the primary concepts towards managing scope creep. It involves clearly defining what is, and what is not, part of the project. These boundaries need to be clear for all stakeholders involved in the project. This process includes identifying the project's objectives, deliverables, milestones, functions, and features. By having a clear project scope, it helps to set expectations, minimize scope creep, and prevent potential disputes in the project’s lifecycle.

Accurate and thorough requirements gathering and analysis is crucial in scope creep management. This process involves understanding the needs and expectations of all stakeholders. It requires identifying, documenting, and validating the specific project requirements. It’s a rigorous process that includes various techniques such as interviews, surveys, observation, workshops, etc. Misunderstanding or overlooking requirements often leads to scope creep, which is why this process is so important.

Change Control Process is a key approach towards managing scope creep. Changes are inevitable in most projects but if not managed properly, can lead to scope creep. It involves identifying, documenting, approving or rejecting changes to the project after the baseline has been set. It includes procedures for managing change requests, assessing impacts on scope, time, cost and quality. It helps maintain control over the project's scope and ensuring all changes are agreed upon.

Scope Management Plan is a framework that outlines how the project scope will be defined, managed, validated and controlled. It includes information on roles and responsibilities, scope definition, baseline setting, change control process, and scope verification methods. A well-defined Scope Management Plan can prevent scope creep by providing guidelines and processes to handle any potential changes in scope.

Scope validation refers to the process of formally accepting and confirming the project’s deliverables. It involves comparing what deliverables were planned with what was actually produced to make sure the project is currently on track and according to plan. This stage takes place all throughout the project life cycle. When there are any deviations from original plans, scope validations will help identify them early enough to make corrective actions. By practicing regular scope validation, you can manage and control the extent of scope creep in a project.

Scope Baseline Documentation refers to the recording of your project's scope—what it is you set out to achieve, including all objectives, deliverables, and procedures. Establishing your project's scope baseline, and routinely referring back to it, is critical for keeping a project on track. It helps set the parameters of a project and gives all team members a reference point to know what changes or additions are genuinely within the scope. This documentation can also provide a clear vision of what was approved and agreed upon as the project scope, making it more challenging for scope creep to occur unnoticed.

Effective stakeholder engagement is a critical part of managing scope creep. This involves regular communication with all stakeholders to ensure that everyone's expectations are managed correctly. Stakeholders must understand the project scope, deliverables, limitations, and the process for making changes. Regular updates and feedback sessions can help reduce changes and limit scope creep. Also, a clear escalation process should be communicated to all to handle any changes or scope-creep related issues. By engaging stakeholders effectively, the chance of misunderstandings or unapproved changes being added to the project scope can be significantly reduced.

Scope Change Request Evaluation refers to the process of assessing and making a decision on whether a change request should be approved or declined. This includes evaluating the impact of the change on project cost, schedule, and quality. It is crucial to properly evaluate any change requests to ensure they align with the project's objectives and benefits. The evaluation of change request often involves a cross-functional review that includes stakeholders, managers, and team members, to ensure the decision is informed by different perspectives. The ultimate decision may depend on factors such as the strategic importance of the change, the cost-benefit analysis, and the overall priority within the portfolio of projects in the organization.

Scope creep monitoring is an ongoing process that involves routinely examining project progress and scope adherence. Regular reviews of the project milestones, schedule, costs, and benefits should be conducted to identify early signs of scope creep. This process may involve tools and methods such as performance measurement baseline, earned value analysis, variance analysis, trend analysis, and constant communication with stakeholders and project team members. Early detection can help the project manager take preventative or corrective actions to mitigate negative impact on the project.

Mitigation Strategy Development is the process of designing and implementing methods to reduce the risks of scope creep. The aim is to either prevent the onset of scope creep or diminish its severity if it happens. Strategies may include setting clear project boundaries, establishing a solid change control process, consistent communication with the team and stakeholders, strict adherence to the requirements analysis, and maintaining a comprehensive Scope Management Plan. The specific strategies will depend on the nature and complexity of the project, and may require flexibility and adaptability as the project progresses.