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Four Types of Cloud Computing Service Models 

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1. Software-as-a-Service (SaaS)

Software-as-a-service (SaaS) presents a comprehensive product that is run and administered by a cloud service provider/vendor. SaaS is a service in the cloud, extending an entire software suite in pay-per-use form. It is made accessible to the end-consumers over a ubiquitous network, i.e. the internet.

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2. Platform-as-a-Service (PaaS)

Platform-as-a-service (PaaS) is a subset of SaaS and it is built on virtually the same infrastructure as IaaS. Besides that, in this service model, the vendor assists companies with middleware, database management systems, OS, web servers and development tools. All of these encapsulate a remote environment where users can build, compile and run their software products without requiring any in-house hardware/software.

3. Infrastructure-as-a-Service (IaaS)

Infrastructure-as-a-service (IaaS) is one of the most pliable cloud computing service models which presents the required infrastructure and all the computing resources to users in an entirely remote environment. The vendors delivering PaaS service are responsible to provide advanced services to address your company’s infra needs, which involves data storage space, servers, virtualization and networking.

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4. Unified Communications-as-a-Service (UCaaS)

Unified communications-as-a-service (UCaaS) is trending up amid the current crisis as this service model presents communications continuity and remote collaboration services to users, worldwide, via the cloud network. Moreover, this service model provides advanced security and reliability, enabling the remote workforce to work seamlessly in a secure, virtualized cloud environment.

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