Defining a strategy for system modernization

Often, a legacy system gets left out of an enterprise’s overall digital strategy, and issues get addressed as needed. A reactive approach prevents organizations from executing overall system modernization and benefits.

If your legacy system has serious business challenges, such as security and compliance issues, or cannot address a business need, you can take a big-bang approach. In the big-bang method, you build a new system from scratch and shut down the old system. This approach is risky but addresses a business need that can be mitigated from the existing legacy system.

The other approach is a phased approach, where you upgrade one module at a time and keep running both the old and the new systems. A phased approach is less risky but takes a long time and may be more expensive, as you need to maintain both environments with increased network and infrastructure bandwidth.

Approaching your application portfolio, prioritizing...