Scope creep
Scope creep is the gradual, uncontrolled growth of a project's scope through small additions that bypass the change request process. It erodes budget and timeline because extra work is added without extra time or money.
Change requestA change request is a formal proposal to alter an agreed project baseline: scope, timeline, budget or a signed-off requirement. It states the reason, the impact on cost, time, risk and benefits, and is approved or rejected by the authority set in project governance.