Legacy Modernization: How to Choose Between Wrap, Replace, or Rebuild

Legacy systems can become difficult to maintain, integrate, and scale as business requirements and technologies evolve. This detailed guide explores legacy system modernization and explains three common approaches: wrapping existing applications, replacing outdated platforms, or rebuilding systems from the ground up. It highlights important considerations such as technical debt, business value, system dependencies, integration complexity, scalability, customization, migration risks, and long-term goals.