Every enterprise has them — systems that are 15, 20, sometimes 30 years old, running critical business processes that no one fully understands anymore. The developers who built them have retired. The documentation is incomplete. But the systems work, and the risk of replacing them feels enormous.
The Strangler Fig Pattern
The most effective approach to legacy modernisation is incremental decomposition using the Strangler Fig pattern, named after the tropical tree that gradually wraps around a host until the host is fully replaced. New functionality is built in modern services alongside the legacy system, with a routing layer directing traffic to either old or new components.
- No big-bang cutover risk — business continuity throughout
- Teams learn modern practices incrementally
- ROI is visible from the first delivery increment
- Risk is bounded to each individual decomposed capability
← Zurück zu ImpulseThe goal is not to build something new. The goal is to reduce the risk of the business being held hostage by code written before the internet existed.
