Extending corporate boundaries to cloud infrastructure providers requires focused review of security practises used to integrate from the enterprise DMZ to external trading partners. Here is an article that covers Enterprise-to-Cloud communications issues and how best to prepare from them. SOA Testing and XML Gateway play an intergral part in ensuring that the security provisions are well tested and strictly enfored while interacting with cloud providers.
Strategies for Securing Enterprise-to-Cloud Communication
— The Cloud Security Alliance (CSA) published Version 2.1 of its Guidance for Critical Areas of Focus in Cloud Computing with a significant and comprehensive set of recommendations that enterprises should incorporate within their security best practices if they are to use cloud computing in a meaningful way. The Guidance provides broad recommendations on operational security concerns including application security, encryption & key management, and identity & access management. In this article, we will consider security implications of REST- and SOAP-based communication between consumers and specifically, Infrastructure as a Service (IaaS) providers.