IaaS 和 PaaS 的关系

Question

im trying to understand whats IaaS and PaaS and how they related to each other. There are a many picture like this In relation of this picture IaaS is a part of PaaS and PaaS cant stand alone, is that right? I mean…i could use a PaaS in my company and „put“ a PaaS on my own infrastucture? In this case i would manage the Virtualization Servers, Storage and Networking itself.
Can someone explain this?

Answer 1

PaaS and IaaS differ from the management perspective (who manages what). The are both different approaches on how to benefit from the cloud infrastructure.

Using a PaaS approach, you only care about your applications and data. The cloud vendor (Azure, AWS, GCP, ...) will be responsible for providing and maintaining the infrastructure but also for updating and patching the OS, the middleware and runtimes (.net, java, node.js, ...).

Using the IaaS approach, the cloud vendor will be responsible for providing and maintaining the infrastructure while you'll be responsible for updating and patching the OS, the middleware and runtimes (.net, java, node.js, ...) and also for caring about your applications and data.

So no, PaaS is not something you can 'put' on your company's infrastructure since doing so, you'll need to manage the underlying infrastructure and hence loose the benefits of the PaaS approach.

Does that make more sense?