“…Indeed, only a few models seem to be used in the software industry and none had follow-up studies, revealing a concerning detachment between academia and industry with regard to maturity models. Practices adoption, project performance 4 levels, based on existence an adherence to a structured process [38] Practices adoption 4 levels, based on learning [65] Practices adoption, sustaining approach 5 levels, based on existence and adherence to a structured process [49] Highly productive teams 5 levels, based on people [56] Sustaining approach 6 levels, based on existence and adherence to a structured process [50] Project performance 5 levels, based on existence and adherence to a structured process [51] Practices adoption 4 levels, based on existence and adherence to a structured process [27] Continuous improvement 5 levels, based on existence and adherence to a structured process [6] Highly productive teams 6 levels, based on existence and adherence to a structured process [54] Project performance 5 levels, based on existence and adherence to a structured process (practices) [77] Continuous improvement 5 levels, based on existence and adherence to a structured process (Scrum practices) [8] Continuous improvement - [40] Sustaining approach - [70] Practices adoption, continuous improvement - [20] Practices adoption 3 levels, but they mention adherence to a process should not be measured [68] Practices adoption 6 levels, based on existence and adherence to a structured process [47] Practices adoption, continuous improvement 4 levels, based on existence and adherence to a structured process (practices) [69] Continuous improvement 5 levels, based on existence and adherence to a structured process [16] -- [72] Sustaining approach 5 levels, based on existence and adherence to a structured process [3] Practices adoption - [71] Continuous improvement - [64] Practices adoption 6 levels, based on existence and adherence to a structured process Lean [29] Practices adoption, highly productive teams 5 levels, based on existence and adherence to a structured lean culture and process [31] Practices adoption 5 levels, based on existence and adherence to a structured lean culture and process (focus on products) [11] --…”