BRS vs SRS


BRS vs SRS: Know the Difference


The difference between a Requirement and a Specification


    Requirement         Specification    
  They outline “what” the software must do     They outline “how” the software will be created  
  They outline the software from the end-user,
  business and stakeholder perspective.
  They outline the software from the technical
  team perspective.

There are a plethora of terms and terminology for various documents
Specification Documents are of different types -
  • SRS - System Requirement Specifications
  • FRS - Functional Requirement Specifications
  • BRS - Business Requirement Specification
  • CRS- Compatibility Requirements Specifications
  • PRS - Performance Requirements Specifications
  • RRS- Reliability Requirements Specifications
  • CRS-Configurations Requirements Specification

Requirement documents are of different types such as,
  • BRD - Business Requirement Document
  • SRD - System Requirement Document

Below is differenciation between BRS Vs SRS,
    BRS ( Business Requirement Specification)         SRS ( System Requirement Specification)    
  It describes at very high level the
  functional specifications of the software
  It describes at a high level, the
  functional and technical specification of the software
  It is a formal document describing about the
  requirement provided by client (written, verbal)
  It specifies the functional and non-functional
  requirements of the software to be developed
  Usually its created by the Business Analyst
  who interacts with clients
  •   Usually its created by the System Architect
      who is an technical expert .
  •   Though in smaller companies the
      BA will create SRS as well.
  •   Some companies do not create SRS altogether.
      Their BRS is detailed enough to be used as SRS as well.
  It is derived from client interaction
  and requirements
  It is derived from the BRS

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