Specs represent specification. In an information technology [IT] environment, you will find two kinds of specification: [1] functional specification and [2] technical specifications. These documents contain the business requirements, such as inputs, solutions, processing logic, and so on.
Functional specification: The documentation typically describes what is needed by the system user as well as requested properties of inputs and outputs. The functional specification is business-oriented. A functional specification does not define the inner workings of the proposed system, nor does it include information for how the system function will be implemented. Instead, it focuses on what various outside agents [e.g., people using the program, computer peripherals, or other computers] might observe when interacting with the system.
Technical Specification: While the functional specification is business-oriented, the technical specification is system-oriented and discusses programming.
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