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Compute: VMs vs. App Services

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IaaS vs. PaaS Compute

  • Azure Virtual Machines (IaaS): You get a virtual server. You choose the OS (Windows/Linux) and size. You are responsible for configuring the software, patching the OS, and setting up the firewall. It gives you total control.
  • Azure App Service (PaaS): You just upload your code (web app). Azure manages the underlying VMs, the OS patching, and the load balancing. You focus only on the application logic. It supports .NET, Java, Node.js, Python, etc.