Scope creep is a project management phenomenon where uncontrolled changes or extensions to the scope of a project can stem from a number of sources, such as changes in customer requirements, additional requests from stakeholders, failure to properly document specifications, and more. It can lead to unexpected costs, delays, unhappy customers and less-than-optimal outcomes – making it something that project managers should be vigilant about avoiding. The best way to mitigate scope creep is to have a thorough plan in place before the project starts, so that any changes can be quickly identified and addressed early on. This will ensure that projects remain on track, within budget and with happy customers!