As DevOps gains momentum in the industry, it is taking on various interpretations and approaches. This article is based on HP’s research and industry experience. It will propose a maturity model for DevOps, evaluate the key success factors and their evolution. Application owners, development teams and IT operations personnel who are looking to adopt DevOps or mature their DevOps practices, will be able to learn the DevOps landscape, assess their current position and work out their evolution path. Part 1 describes the proposed DevOps maturity model. Part 2 contains several practical examples on how the model is used to estimate the maturity level of different activities, and what is required to move from one level to the next.