What are the types of cloud computing services?

Four types of Cloud Computing Service:-

SaaS (Software as a service) - Is the business model of software license, which involves the development and support of the software vendor. Customers also have the opportunity of paid use of it, usually through the internet.

PaaS (Platform as a Service) - An integrated platform for the development, deployment, testing and support of web-applications. Presented as a service on the basis of the concept of cloud hosting service.

IaaS (Infrastructure as a Service) - A computer infrastructure, typically presented in the form of visualization. Is a service within the concept of cloud hosting.

XaaS(Anything as a Service) - This is a recent addition to cloud computing services. Under XaaS, X is regarded as 'anything' which could be provided as a service using cloud computing. This is also known as 'Everything-as-a-Service'. Generally, XaaS providers offer hybrid cloud services products.