Aging, legacy applications are increasingly more expensive to operate and maintain year-over-year. Typical government enterprises spend more than 77% of their IT budget on such activity. From the moment one writes a line of code, it is subject to accumulating technical debt and becoming legacy. A one-time, big-bang modernization of legacy application is risky and a sizable CAPEX is often required. A continuous, incremental modernization of legacy application is less risky and OPEX may be used. Continuous Application Modernization (C-AppMod) is an innovative approach designed to reduce the existing applications’ technical debt and leverage emerging technologies to deliver continuous business value streams. It incrementally transforms an enterprise’s unstable, unsecured portfolio of legacy applications into a secure, cloud-ready architecture. It establishes the tools and approaches needed to continuously modernize as the method of sustainment.