In many situations, a working system has ceased to service the needs of an organisation. The core of the system and the existing business logic may still be relevant  but there are new needs or perhaps there are new technologies available that can make the system more powerful.

We an help in bringing the system up to date, by re-specifying and rebuilding the core system on the same platform, or a fresh one with a new database. This can often have relevance where scale has become an issue through organisation growth.