The cloud computing market has grown into a complex ecosystem of cloud-enabled technology and services. The portion of enterprise IT spend dedicated to cloud computing is increasing. By 2022, worldwide public cloud service market will grow to $331.2 billion, spending on Infrastructure-as-a-Service (IaaS) is predicted to increase to $76.6 billion, Platform-as-a-Service (PaaS) to $31.8 billion, and Cloud Application Services (SaaS) to $143.7 billion.