What are strategy options that you have for legacy system evolution?

Legacy system evolution strategies include refactoring, where existing code is improved without changing its external behavior; rewriting, which involves completely replacing the system with a new one; and encapsulation, where legacy systems are wrapped with new interfaces to enable integration with modern applications. Another option is to adopt a hybrid approach, gradually migrating components to newer technologies while keeping the core system operational. Additionally, organizations can consider cloud migration to leverage scalability and reduce maintenance costs. Choosing the right strategy depends on factors such as budget, risk tolerance, and desired outcomes.