Sasin Graduate Institute of Business Administration of Chulalongkorn University, Thailand, is currently conducting a study regarding the Digital Maturity Measurement of companies in Thailand so as to identify Digital Maturity Stage of each company together with the country level. In order to develop and customize the Digital Maturity model for Thailand context, Sasin would like to purchase the Digital Maturity model license of TM Forum including DMM Dimension and Sub-dimensions as well as specific criteria to develop further DMM for companies in Thailand. So, Sasin would like to conduct the DMM for Thailand context and understand the TM Forum framework.