PaaS gives users a platform on which to develop, run, and manage their own apps without having to build and maintain the infrastructure or environment that apps need to run. Since users handle the actual apps and data themselves, PaaS is an ideal solution for developers and programmers. Software as a service (SaaS /ss/) is a software licensing and delivery model in which software is licensed on a subscription basis and is centrally hosted. PaaS provides hardware and an application-software platform to users from an outside service provider. Users manage things like the operating system, apps, and middleware while the provider provides the hardware, networking, hard drives, storage, and servers-and the provider is responsible for taking care of outages, repairs, and hardware issues. SaaS is a software deployment model in which a third-party provider builds applications on cloud infrastructure and makes them available to customers via the. The user has access to the infrastructure through an API or dashboard, and the infrastructure is rented. IaaS means a provider manages the infrastructure for you-the actual servers, network, virtualization, and storage-via a cloud. In addition to SaaS, other major as-a-Service options can include Infrastructure-as-a-Service (IaaS) and Platform-as-a-Service (PaaS). The term as-a-Service generally refers to a solution that is managed by someone else so you can focus on what’s important, like iterative improvements of custom apps.
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