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Navigating the complexities of Enterprise Architecture (EA) maturity models? This discussion provides an in-depth comparison of Gartner’s ITScore, GAO’s EAMMF and The Open Group’s O-ISM3, three of the foremost models in the realm. While all three models aim to aid organizations in assessing and elevating their capabilities, they cater to distinct aspects of enterprise architecture. The ITScore offers a holistic perspective on the organization’s maturity, encapsulating domains like business and technology architecture. In contrast, O-ISM3 zooms in on information security management, ensuring alignment with strategic objectives. Dive in to discern the specific features, potential advantages, and the most suitable contexts for each model, equipping you to make informed decisions tailored to your organization’s needs.