This differs significantly from the traditional approach which rebuilds the entire system from scratch and does an extremely risky 1x final data migration and failover. This often leads to expensive mistakes such as: lost data, bugs, and missing features.
The traditional model also has large overhead costs for project management and requirements gathering. Until the final switch has been done all new features must be coded simultaneously in both the old and new systems, further increasing costs. Finally, there’s a large percentage of these projects that only get 50% completed before they’re canceled and thrown away.
Our piecemeal approach allows the old and new systems to remain fully integrated at all times. In addition, our frequent production releases drastically reduces risk.