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The main difference between the two is their focus. A PRD outlines the specific features and functionality that a product must have to meet customer needs and expectations, while a BRD outlines the high-level business objectives and goals that a product must achieve to support the overall business strategy.

As seen above, the BRD focuses on WHAT functionality and rules apply while the FSD on HOW it looks and what technically needs to be accomplished for the feature to work as desired by the client to enforce business rules, collect data, and accomplish the business needs.

A BRD deals with what an organization hopes to achieve through a vendor partnership. On the other hand, a functional requirements document (FRD) deals with how they expect to achieve it. For example, imagine an organization that's recently purchased an applicant tracking system to help with their recruiting efforts.

The Business Requirement Document (BRD) describes the high-level business needs whereas the Functional Requirement Document (FRD) outlines the functions required to fulfill the business need. BRD answers the question what the business wants to do whereas the FRD gives an answer to how should it be done.

Summary. A business requirements document (BRD) is a report detailing everything a new project requires for success. There are seven key components of a BRD template, which serve to provide clarity and context for stakeholders. In this piece, learn how a BRD template can increase your chances for project success.

If you are looking for a quick comparison between the three, then here you go: BRD contains 'high-level' business requirements, SRS contains 'detailed' functional and non-requirements. FRD/FRS contains 'granular' functional requirements along with data flow and UML diagrams.

Answer: BRD and FRS are not the same. The main difference between a BRD and an FRD is that a BRD is a high-level document that outlines the business goals, while an FRD is a more detailed document that outlines the functional requirements for a system.