A POC is a relatively 'quick-to-build' representation of a concept of theroy. A POC is used to test the proposed solution especially a theoretical solution, for its feasibility, benefits, quality of usefulness, and the risk involved.
Its a low risk and an effective way of exploring the potential benefits of BizTalk Server solutions, without incorporating the cost of a complete implementation, it also helps identify the problems that could impact the deployment of the final solution.

over all benefits include:

• Quick evaluation
• Low investment
• Low risk
• Early feedback