Developers simply pick from a menu to ‘spin up’ servers and environments they need to run, build, test, deploy, maintain, update, and scale applications. With PaaS, the cloud provider hosts everything-servers, networks, storage, operating system software, middleware, databases-at their data center. PaaS provides software developers with on-demand platform-hardware, complete software stack, infrastructure, and even development tools-for running, developing, and managing applications without the cost, complexity, and inflexibility of maintaining that platform on-premises. SaaS is the primary delivery model for most commercial software today-there are hundreds of thousands of SaaS solutions available, from the most focused industry and departmental applications, to powerful enterprise software database and AI (artificial intelligence) software. Protection from data loss: Because your application data is in the cloud, with the application, you don’t lose data if your device crashes or breaks.Automatic upgrades: With SaaS, you take advantage of new features as soon as the provider adds them, without having to orchestrate an on-premises upgrade. In addition to the cost savings, time-to-value, and scalability benefits of cloud, SaaS offers the following: In most cases, SaaS users pay a monthly or annual subscription fee some may offer ‘pay-as-you-go’ pricing based on your actual usage. SaaS-also known as cloud-based software or cloud applications-is application software that’s hosted in the cloud and that you access and use via a web browser, a dedicated desktop client, or an API that integrates with your desktop or mobile operating system. However, there is often confusion among the three and what’s included with each: SaaS (Software-as-a-Service) IaaS (Infrastructure-as-a-Service), PaaS (Platform-as-a-Service), and SaaS (Software-as-a-Service) are the three most common models of cloud services, and it’s not uncommon for an organization to use all three. According to a recent survey, 92% of organizations use cloud today (link resides outside IBM), and most of them plan to use it more within the next year. If you use a computer or mobile device at home or at work, you almost certainly use some form of cloud computing every day, whether it’s a cloud application like Google Gmail or Salesforce, streaming media like Netflix, or cloud file storage like Dropbox. traditional IT infrastructure and offer the same self-service and agility to their end-users. Not surprisingly, many corporations have adopted the cloud delivery model for their on-premises infrastructure so they can realize maximum utilization and cost savings vs. Virtualization enables cloud providers to make maximum use of their data center resources. For example, a single hardware server can be divided into multiple virtual servers. This includes some form of virtualized IT infrastructure-servers, operating system software, networking, and other infrastructure that’s abstracted, using special software, so that it can be pooled and divided irrespective of physical hardware boundaries. The term ‘cloud computing’ also refers to the technology that makes cloud work. You can also take advantage of your cloud provider’s global network to spread your applications closer to users around the world. Scale more easily and cost-effectively: Cloud provides elasticity-instead of purchasing excess capacity that sits unused during slow periods, you can scale capacity up and down in response to spikes and dips in traffic.Cloud also lets you empower certain users-specifically developers and data scientists-to help themselves to software and support infrastructure. Improve agility and time-to-value: With cloud, your organization can start using enterprise applications in minutes, instead of waiting weeks or months for IT to respond to a request, purchase and configure supporting hardware, and install software.Lower IT costs: Cloud lets you offload some or most of the costs and effort of purchasing, installing, configuring, and managing your own on-premises infrastructure.The CSP makes these resources available for a monthly subscription fee or bills them according to usage.Ĭompared to traditional on-premises IT, and depending on the cloud services you select, cloud computing helps do the following: What is cloud computing?Ĭloud computing is on-demand access, via the internet, to computing resources-applications, servers (physical servers and virtual servers), data storage, development tools, networking capabilities, and more-hosted at a remote data center managed by a cloud services provider (or CSP). Cloud computing transforms IT infrastructure into a utility: It lets you ‘plug into' infrastructure via the internet, and use computing resources without installing and maintaining them on-premises.
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