For the reenactment of internet and cloud technologies, interoperability is an important touchstone. Most of the consumers are analyzing the appropriateness of cloud to employ themselves for their enterprise or personalized operations. Customers are selfsatisfied at the inception, but expectation changes. Based on their business escalation it needs further adoption of modern cloud services the existing cloud provider fails to offer. Hence the user needs interoperability and portability to ship their assets from one cloud to other cloud. The complication faced by the customers in shifting their assets remains as a challenge to be addressed. In this paper we outline the existing cloud technologies, interoperability issues and possible solution to overcome the problems. © 2015 The Authors.