Infrastructure

Key Cloud Concepts: On-premises, IaaS, PaaS, and SaaS.

By user, Xavier,

Aug 22, 2024
1 min read


Understanding these foundational models is crucial for navigating cloud computing effectively.

On-premises, IaaS, PaaS, and SaaS

Let’s see each difference.

On-premises, you’re in charge of everything: power, hardware, networking, OS, data, application...

Infrastructure as a Service (IaaS) provides virtualised computing resources over the internet. You rent physical or virtual servers, storage, and networking infrastructure on a pay-as-you-go basis.

Platform as a Service (PaaS) offers a platform allowing customers to develop, run, and manage applications without the complexity of building and maintaining the underlying infrastructure.

Software as a Service (SaaS) delivers software applications over the internet. You outsource everything to the owner of the application. Usually, it is on a subscription basis.

Choosing one will depend on your technical knowledge of your team, compliance of data, how much you want to deal with hardware.

Usually, startups go with SaaS, so it allows them to move faster without worrying about infrastructure.

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