Divided in five levels:

1) Initial:

The organization is characterized by an adhoc set of activities. The processes aren't defined and success depends on individual effort and heroics.

2) Repeatable:

In this level some processes are repeatable, possibly with consistent results.

3) Defined:

In this level, we define all processes are documented for both management and engineering activities, and standards.

4) Managed:

Detailed measures of each process are defined and product quality data is routinely collected. Both process and products are quantitatively understood and controlled.

5) Optimizing:

In this we optimize the application by following improvement process.