For the capability dimension, the process capability levels and process attributes are identical to those defined in ISO/IEC 15504-2. Process capability is defined on a six point ordinal scale that enables capability to be assessed from the bottom of the scale, Incomplete, through to the top end of the scale, Optimizing.
The scale represents increasing capability of the performed process from performance that is not capable of achieving its process outcomes through to performance that is capable of meeting relevant process and improvement goals that are explicitly derived from the organization’s business goals. The scale defines a well-defined route for improvement for each individual process.
There are six capability levels.
| Level |
Level |
Description |
| 0 |
Incomplete |
The process is not implemented, or fails to achieve its process purpose. |
| 1 |
Performed |
The process is not implemented, or fails to achieve its process purpose. |
| 2 |
Managed |
The previously described Performed process is now implemented in a managed fashion (planned, monitored and adjusted) and its work products are appropriately established, controlled and maintained. |
| 3 |
Established |
The previously described Managed process is now implemented using a defined process that is capable of achieving its process outcomes. |
| 4 |
Predictable |
The previously described Established process now operates within defined limits to achieve its process outcomes. |
| 5 |
Optimizing |
The previously described Predictable process is continuously improved to meet relevant current and projected business goals. |
