The document discusses the purpose and contents of a software requirements specification (SRS). An SRS defines what functionality a software system should have and describes both functional and non-functional requirements. It serves as an agreement between developers and customers about what will be delivered. Writing out requirements helps ensure agreement on scope and prevents misunderstandings, guiding development and testing.

1. The Software Requirements
Document
Sometimes Called Software Requirements Specification (SRS)

2. What is an SRS
• A software requirements specification (SRS) is
a description of a software system to be
developed. It lays out functional and non-
functional requirements
• SRS is the official statement of what the
system developers should implement.
• SRS is a complete description of the behavior
of the system to be developed.
• SRS should include both a definition of user
requirements and a specification of the system
requirements.
• The SRS fully describes what the software will

3. What is the purpose of an
SRS?
• The SRS precisely defines the software product
that will be built.
• SRS used to know all the requirements for the
software development and thus that will help in
designing the software.
• It provides feedback to the customer.

4. What is a Requirements
Document
A requirements document explains
Why a product is needed,
Puts the product in context, and
Describes what the finished product will be
like.
A large part of the requirements document
is the formal list of requirements.

5. What is a Requirements
Document?
Requirements includes
 Descriptions of system properties,
Specifications for how the system should work,
Constraints placed upon the development process.
Generally, requirements are statements of what a
system should do
rather than how it should do it.
Requirements specifications should not include
design solutions
Requirements documents usually include user,
system, and
interface requirements(very important)

6. Why Write Requirements
Documents?
Although writing a complete requirements document is
time-consuming, there are many advantages to having
one.
Writing requirements helps to ensure that
everyone agrees on what is to be done.
This can avert misunderstandings down the road
and save time that later might be wasted in rework.
 You can use a requirements document to help set
expectations about what will and will not be
accomplished in the current development cycle.
A solid requirements document also serves as a
guide to development and testing throughout the
project.