Must Have: The Non-Negotiables
These are the fundamental requirements that are essential for the project to be viable. Without these features or tasks, the project cannot be launched or would be considered a failure. They are non-negotiable and form the core functionality of the product. The “Must Have” category is the first filter for your requirements list and represents the minimum usable subset of a project.
Should Have: The Important Additions
This category includes features that are important but not critical for the initial release. They add significant value to the project and improve the user experience, but the project can still function without them. “Should Have” requirements are often prioritized for the next release or phase of development if there are time or resource constraints during the current phase.
Could Have: The "Nice-to-Haves"
These are features that are desirable but have a low impact if they are omitted. They are typically low-cost and can be implemented easily if there are leftover resources after all “Must Have” and “Should Have” tasks are complete. “Could Have” items are the first to be dropped if the project falls behind schedule, as they do not affect the core functionality or user satisfaction in a significant way.
Won’t Have: The Out-of-Scope Items
This is a crucial category for preventing scope creep. The “Won’t Have” list includes features and requirements that are explicitly agreed upon to be out of scope for the current development phase. By clearly defining what will not be done, teams and stakeholders have a clear understanding of the project’s boundaries, which helps to manage expectations and maintain focus. These items can be revisited for future releases.