The vision section describes the final desired state of the project once the project is complete. It also specifies the key goals of the project. This section provides a context for decision-making. A shared vision among all team members can help ensuring that the solution meets the intended goals. A solid vision clarifies perspective and facilitates decision-making.
The vision statement should be specific enough that you can look at a proposed solution and say either "yes, this meets the vision and goals", or "no, it does not".
This section describes the principal user roles of the project together with the key characteristics of these roles. This information will inform the design and the user scenarios. A complete set of roles helps in ensuring that high-level requirements can be identified in the product backlog.
Again, the description should be specific enough that you can determine whether user A, performing action B, is a member of the set of users the project is designed for.
The Scope places a boundary around the solution by detailing the range of features and functions of the project. This section helps to clarify the solution scope and can explicitly state what will not be delivered as well.
It should be specific enough that you can determine that e.g. feature A is in-scope, while feature B is out-of-scope.
This section provides a high-level outline of the solution.
Global Architectural Structure Of the Project:
This section provides a high-level architecture or a conceptual diagram showing the scope of the solution. If wireframes or visuals have already been done, this section could also be used to show how the intended solution will look. This section also provides a walkthrough explanation of the architectural structure.
Design Implications and Discussion:
This section discusses the implications and reasons of the design decisions made during the global architecture design.
This section discusses the minimum acceptance criteria at the end of the project and stretch goals.
Release planning section describes how the project will deliver incremental sets of features and functions in a series of releases to completion. Identification of user stories associated with iterations that will ease/guide sprint planning sessions is encouraged. Higher level details for the first iteration is expected.