Safe substitution for service-based applications

In order to have desired levels of flexibility, service-based applications (SBAs) are dynamically adapted to replace constituent software services at runtime. These services are owned, provided, and developed by third parties, which makes it difficult to know whether such service components introduce undesirable features into the SBA. It requires a new method to ensure that the replacement or substitution is safe. This paper proposes an integrity-based substitution checking method and uses an adaptive Web application as an example for demonstrating the effectiveness of the proposed approach.