One of the main benefits of Fast is that it increases the productivity of the developers between 30 and 50%, as it enforces systematic code reuse in the most repetitive and error prone parts of the applications, for example, data base access, reading/writing to files, error management... This way the code written by the developers is reduced to 40% of the total application code.
In addition, Fast can be easily integrated with the production environment, which makes available to the programmers different tools and validation engines inside the development environment (context help, code completion, access to support tools of the system, etc.).