With the increasing maturity and acceptance of cloud infrastructure services in the enterprise, migrating important workloads to the cloud—public, private or hybrid—is becoming a promising proposition. But migrating mission-critical applications, especially ones built on legacy architecture, can be challenging to say the least.

According to Citi Research, the market size of cloud computing, in terms of revenues, lies between $45 to $50 billion for 2013-2014, and will have a CAGR* of 20% by 2020. Global Industry Analysts, Inc. (GIA), on the other hand, says the market for cloud computing will reach $127 billion by 2017. As per the International Data Corporation (IDC), cloud software revenues will be $67 billion this year, with a CAGR of 24% for the next five years. According to Gartner, Inc. (IT) enterprise spending on public cloud services will reach $207 billion by 2016.