| Basic of definition | BRD | SRS |
| Definition | BRD is one of the high-level functional specification of the software. | SRS is one of the high level functional and technical specification of software. |
| Derived from | BRD is basically drived based on requirements and client interaction. | SRS is derived from the BRS. |
| Creates on | The Business Analyst creates it after their direct interaction with the clients. | The System Architect creates it as it needs technical expertise. Though sometimes Bas too can create it. |
| Document | It is a formal document to describe the requirement provided by the client (written, verbal)
| It describes the functional and non-functional requirements of the software to be developed
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