Cloud Computing Cloud transforms the IT infrastructure into a utility: it makes it possible to "connect" to the infrastructure via the Internet and to use IT resources without installing and maintaining them on site. What is cloud computing? Cloud computing is the on-demand access, via the Internet, to computing resources: applications, servers (physical servers and virtual servers), data storage, development tools, network functionalities, etc., hosted in a data center remote managed by a cloud service provider (or CSP). The CSP makes these resources available for a monthly fee or a usage-based bill. Compared to traditional on-premises computing, and depending on the cloud services you select, cloud computing helps you: Reduce IT costs: The cloud allows you to offload some or most of the cost and purchasing effort, installation, configuration and management of your local infrastructure. Improve agility and time to value: With the 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 configures supporting hardware and installs software. The cloud also allows you to empower certain users, especially developers and data scientists, to help themselves with software support and infrastructure. Scale more easily and affordably - The cloud provides elasticity - instead of buying excess capacity that isn't used during downturns, you can scale capacity up and down in response to spikes and dips of traffic. You can also leverage your cloud provider's global network to bring your applications closer to users around the world. The term "cloud computing" also refers to the technology that powers the cloud. This includes some form of virtualized computing infrastructure: servers, system software, network and other abstract infrastructure, using special software, so that they can be grouped and divided regardless of the physical limitations of the hardware. For example, a single hardware server can be split into multiple virtual servers. Virtualization allows cloud service providers to create maximum utilization of their data center resources. You use a computer or mobile device at home or work, you almost certainly use some form of cloud computing every day, whether it's a cloud app like Google Gmail or Salesforce, streaming media like Netflix, or data storage. Cloud files like Dropbox. According to a recent survey, 92% of organizations are using the cloud today (the link lies outside of IBM) and most plan to use it more over the next year. Cloud Computing Services.
Types of Cloud Computing ! 1.Public cloud is a type of cloud computing in which a cloud service provider makes available computing resources, from SaaS applications to individual virtual machines (VMs) to bare metal hardware, to supplement the company's IT infrastructure and platforms. - quality development to users via the public Internet. These resources can be accessed for free, or access can be sold under subscription-based or pay-per-use pricing models. The public cloud provider owns, manages, and takes full responsibility for the data centers, hardware, and infrastructure on which customer workloads run and typically provides high-bandwidth network connectivity to ensure high performance and fast access to applications and data. The public cloud is a multi-tenant environment - the cloud service provider's data center infrastructure is shared by all public cloud customers. Public clouds: Amazon Web Services (AWS), Google Cloud, IBM Cloud, Microsoft Azure and Oracle Cloud - these customers can number in the millions. The global public cloud computing market has grown rapidly in recent years, and analysts expect this trend to continue; Industry analyst Gartner predicts that global public cloud revenues will exceed $330 billion by the end of 2022 (link lies outside IBM). Many companies are moving parts of their IT infrastructure to the public cloud because public cloud services are resilient, easily scalable, and flexible to adapt to changing workload demands; others are attracted by the promise of greater efficiency and less waste of resources as customers. Only pay for what they use. Still others seek to reduce expenditure on local hardware and infrastructure.
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