IaaS vs. PaaS
Cloud computing is a concept that originated from the Internet and has become an integral part of modern business practices. Cloud computing refers to the on-demand provision of computer resources, particularly computer processing power and storage, without active user management. The word is usually used to describe cloud-based data centers accessible to several different clients over the Internet. In addition, services that fall under this category may also be referred to as "utility computing" or "infrastructure-as-a-service." They are increasingly becoming popular among businesses of all sizes because they offer a flexible, scalable, reliable, and cost effective option for managing information technology resources on a managed, virtual basis.
Enterprises that are seeking to reduce their IT costs and boost efficiency will find that cloud services are a smart option. By deploying and operating this type of technology, businesses can eliminate two of the most costly IT expenditures: purchasing hardware and software, and managing the infrastructure. The former can be eliminated through the use of resellers and licensing programs, while the latter is only the responsibility of the company that owns the IT infrastructure.
Another way that cloud services are beneficial to businesses is in the area of applications. Applications are an important part of modern business that can consume substantial amounts of resources. Many applications are developed internally at a company before they are made available to customers through licensing programs or cloud computing. By using app stores, the company does not need to invest in developing applications in-house, which significantly reduces cloud spending.
There are three basic types of cloud services: IaaS, SaaS, and PaaS. IaaS stands for "Internet-as-a-Service," while SaaS is short for "Software-as-a-Service." Each of these services has their own distinct benefits but all three deliver similar results. An IaaS provider offers hosted services on the internet, whereas a SaaS provider provides hosted services through a web service portal. A PaaS provider offers hosted services as well as software development and maintenance. These three services work together to provide a complete cloud computing experience for a company.
IaaS and SaaS providers differ primarily in the delivery methodologies. IaaS and SaaS providers generally work with software applications that reside on the companies' own internal network. They may also work with public cloud services delivered through websites hosted by IaaS providers, and through other websites that are supported by SaaS providers. Since IaaS and SaaS providers typically focus on apps that reside on the company's internal network, they may require customization to meet the needs of a company. On the other hand, PaaS solutions rely heavily on external development and community engagement to ensure that a company's software is robust, innovative, and able to meet the unique challenges of modern business.
With public cloud services delivered through websites hosted by IaaS providers, a company has access to its app via the internet. This is different from IaaS, which requires an internet connection for the hosting of its app. PaaS solutions on the other hand use infrastructure that is not located on the company's own servers. These solutions will also typically include third party software development companies who specialize in developing software for the use of a company's PaaS platform. A PaaS solution will often include application integration and deployment capabilities, which are advantageous over other types of SaaS solutions. A company can integrate internally developed software into its cloud services portfolio and still have the latest security and functionality updates delivered to its applications.
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