Level of Detail Required

(1) Whether the system is safety- or security-critical (requiring detailed analysis)

(2) Whether the system is being developed by a separate company through outsourcing (requiring more precise specifications)

(3) Whether an in-house iterative development process is used (allowing less detail since ambiguities can be resolved during development)

Explanation

The level of detail depends on: (1) the type of system — critical systems need detailed requirements for safety/security analysis; (2) the development approach — outsourced development needs detailed, precise specs; (3) in-house iterative development can use less detail since ambiguities can be resolved during development.