The TMMi Assessment method, also known as TAM is an accredited assessment method that can only be conducted by a licensed and certified accredited assessor. The test assessor will demonstrate the ability to follow the TMMi assessment method checklist following the Test Maturity Model and Test Process Improvement Model. In order to obtain a license to conduct test process assessments against the TMMi method, training must be conducted through an accredited provider.
Licensing the TMMi Model
The TMMi Assessment Method (TAM) requires a license to conduct TAM-based assessments. A license can be purchased by completing the Assessment Service Provider application form, indicating that you will be using the TAM license. The use of the license application may only be completed once training has been conducted with an accredited training provider.
The documents required can be found here.