Maturity Level

ISO 21827

COBIT

CMMI

0

Not Performed

Non-Existent

Non-Existent

1

Performed Informally

Ad-hoc and Initial

Ad-hoc

2

Planned

Repeatable but Intuitive

Repeatable

3

Well defined

Defined Process

Defined and Implemented

4

Quantitatively Controlled

Managed and Measurable

Managed

5

Continuously Improving

Optimized

Optimized