Legacy System Modernization: Choosing the Right Path
The right legacy modernization path depends on each application, not on a portfolio-wide mandate. Score every system on business value, technical health, risk and cost, then assign one disposition: retain, retire, rehost, replatform, refactor, rearchitect, replace, or extend on a governed platform. Deliver the changes incrementally rather than in one big-bang cutover. Disclosure: The author works at CloudApper, which makes the CloudApper AI platform, which is discussed in this article. Key takeaways Modernization is a portfolio decision; one strategy for every system wastes money. Assess each application on four axes (business value, technical health, risk, cost) before anyone picks a tool or vendor. Incremental replacement, often called the strangler fig approach, usually beats a big-bang rewrite because value and risk arrive in smaller pieces. Data migration and integrations cause more overruns than code. Plan them first, not last. How do you assess which legacy systems to...