Cloud computing is an accepted widely, emerging paradigm for its ‘pay as you go’ approach, massive economies of scale, and global in minutes concept. Over the years, different cloud providers have emerged with various services to meet the requirements of the end-user. Because of an increase in the diversity of services, the complexity increases. Customers cannot decide the optimal service to fulfill their requirements. This paper provides a comparative analysis of services of top public cloud providers namely, AWS, GCP, Oracle, and Microsoft Azure. Public cloud-provider strives to be efficient in every technological aspect, though some are better for certain tasks than others. This paper, as a solution, introduces the concept of Multi-Cloud computing, to leverage the benefits of the different cloud providers and to maximize their utility in single network architecture.

Keywords : Cloud Computing, Compute, Cloud Service Providers, AWS, GCP, Oracle, Microsoft Azure, Comparative Analysis, Multi-Cloud Computing