The cloud API is growing at a faster phase owing to the wide adoption of smartphones and cloud applications for back-end services. Cloud API differ as per the service and solution, for instance, three major types of services are Platform as a Service (PaaS), Software as a Service (SaaS), and Infrastructure as a Service (IaaS). Businesses globally are also adopting cloud technology, this is driving the demand for cloud API. Increasing number of connected devices with the emergence of Internet of Things (IoT) is also playing an important role in the growth of cloud API. As faster analysis and monitoring is possible through cloud API, which has become necessary for connected devices.