A capability level 1 process is characterized as a “performed process.” A performed process is a process that satisfies the specific goals of the process area. It supports and enables the work needed to produce work products.

Although capability level 1 results in important improvements, those improvements can be lost over time if they are not institutionalized. The application of institutionalization (the CMMI generic practices at capability levels 2 through 5) helps to ensure that improvements are maintained.