A scope of work defines the outcome a supplier is expected to deliver — translating an internal requirement into a form suppliers can respond to.
How it differs. Procurement intake captures what's needed and why; the scope of work turns that into work packages and evaluation criteria.
Required contents. Background, objective, in-scope/out-of-scope table, work packages, deliverables, constraints, buyer obligations, evaluation criteria.
Outcome, not method. Prescribing the method prevents suppliers from demonstrating their approach.
Exclusions. The most frequently omitted section and the largest source of change requests.