A software requirements specification 
is a document which acts as a contract
between the customer and the supplier.
• This SRS contains all the requirement
of the end user regarding that application.
SRS can be used as a communication
medium between the customer and the supplier.
• The developer and tester prepare and examine 
the application based on the requirements written in the SRS.
• The SRS documented is prepared by the
Business Analyst by taking all the
requirements for the customer.