What is the best approach to integrating domain-specific needs? Why is this approach better than others?

Integrating domain information system increase the level of the organization and its efficiency in the specific domain. This approach is better than others because it first planned the system in systematic order and then it is implemented by proper testing so that the system does not fails and it give efficient result.

It is the low cost approach which can be easily used by the various companies and give faster and profitable results. This integrating approach must be domain specific and describe different level of abstraction.