A project definition outlines the scope, objectives, deliverables, and constraints of a specific undertaking. It serves as a foundational document that guides the project from initiation to completion. Here's a breakdown of what a project definition typically includes:

1. **Project Overview**: A brief description of the project, including its purpose and importance. This section sets the context for the rest of the document.

2. **Objectives**: Clearly defined goals that the project aims to achieve. Objectives should be specific, measurable, achievable, relevant, and time-bound (SMART).

3. **Scope**: The boundaries of the project, including what will be included and what will be excluded. This section helps prevent scope creep and ensures everyone understands what's within the project's purview.

4. **Deliverables**: Tangible outcomes or products that will be produced as a result of the project. Each deliverable should be clearly defined and linked to project objectives.

5. **Timeline**: A high-level schedule outlining key milestones and deadlines. This can include start and end dates for major project phases, as well as deadlines for deliverables.

6. **Resources**: Identification of the human, financial, and material resources required to execute the project. This may include personnel, equipment, funding, and any external suppliers or partners.

7. **Constraints**: Factors that may limit the project, such as budgetary constraints, time limitations, technical limitations, or regulatory requirements.

8. **Risks and Assumptions**: Identification of potential risks that could impact the project's success, along with strategies for mitigating or managing those risks. Assumptions made during project planning should also be documented.

9. **Stakeholders**: Identification of individuals or groups who have an interest in or will be affected by the project. This includes both internal stakeholders (such as team members, sponsors, and management) and external stakeholders (such as customers, users, and regulatory bodies).

10. **Approach and Methodology**: Description of the approach or methodology that will be used to execute the project. This may include project management methodologies, tools, and techniques.

11. **Success Criteria**: Criteria that will be used to evaluate the success of the project. This could include measures such as meeting project objectives, staying within budget and schedule, and achieving stakeholder satisfaction.

12. **Communication Plan**: Guidelines for how communication will be handled throughout the project, including who will communicate with whom, what information will be shared, and how often communication will occur.

By clearly defining these aspects of the project upfront, stakeholders can align their expectations, minimize misunderstandings, and increase the likelihood of project success.