What is Cloud Computing and What are its Advantages?
Cloud computing is the instant availability of computing system resources, specifically the storage of data (cloud storage) and computing power without the direct involvement of the user. Large clouds typically contain functions spread across several locations, with each one being a data center. Cloud computing is based on sharing resources to create coherence. It typically follows a "pay-as-you-go" model. This can assist in cutting down on costs for capital but could result in unexpected operating costs that users may not be aware of.
Cloud Computing can be defined as the use of remote servers that are hosted via the Internet to manage and store data instead of local servers or personal computers. Companies that provide such cloud computing services are referred to as cloud-based providers. Clusters and grids are the core of cloud computing.
Organization of every size and industry uses cloud computing . It has various applications, like a backup of data, disaster recovery, software development, testing Big Data Analytics, and even web-based customer-facing applications. For instance, healthcare organizations are using cloud computing to design more customized treatment plans for patients. Financial service businesses are using it to provide real-time detection of fraud and prevent it. Video game developers use cloud-based technology to provide online games to millions of players across the globe.
Types of Cloud Computing:
There are four main types of cloud computing.
1. Private clouds
2. Public clouds
3. Hybrid clouds
Public cloud services are operated through third-party cloud service companies that offer their computing resources, such as storage and servers via the Internet. Microsoft Azure is an example of a cloud that is public. In a cloud that is public, everything including software, hardware, and other infrastructure support is operated and controlled by the cloud service provider. The cloud provider provides these services to you and controls your cloud account via the web browser.
A private cloud is a cloud computing resource that is used only by a particular company. A private cloud could be physically located within the data center of the company. A few companies also contract with an external service provider to manage their cloud. A private cloud is a type of cloud that provides infrastructure and services that are kept through an individual network.
Hybrid clouds blend private and public clouds that are joined by technology that allows applications and data to be shared between them. Allowing applications and data to transfer between cloud services that are public and private Hybrid cloud provides your company greater flexibility and more deployment options, and can help optimize your current infrastructure security.
Multi-clouds are cloud solutions comprised of more than one cloud service from more than one cloud provider - either public or private. Multi-clouds are all hybrid clouds, however, there are exceptions to hybrid clouds. Multi-clouds are hybrid clouds when several clouds are joined via some type of orchestration or integration.
Most cloud computing services fall into three broad categories.
1. Infrastructure as a Service (IaaS)
2. Platform as a Service (PaaS)
3. Software as a Service (SaaS)
This is the most basic in cloud computing. With IaaS, you rent IT infrastructure--servers and virtual machines (VMs), storage, networks, and operating systems--from a cloud provider on a pay-as-you-go basis.
Platform as a Service refers to cloud computing that provides an on-demand platform for developing tests, delivering as well as managing applications. PaaS is created to make it easy for developers to quickly develop mobile or web-based apps without the hassle of installing or managing the server infrastructure, storage databases, and networks required to develop.
Software as a service is the method of delivering software programs over the Internet as well as on-demand, generally on a subscription basis. In SaaS cloud services, cloud service providers provide hosting and management of the software application as well as the underlying infrastructure, and take care of any maintenance requirements, such as updates to software and security patches. The users connect to the software via the Internet typically using an internet browser on their mobile, tablet, or computer.
Cloud computing removes the cost of purchasing hardware and software, and also creating and running in-house data centers, which include the servers on racks and the 24-hour electricity supply for cooling and power, and the IT experts to manage the infrastructure.
The majority of cloud computing services are by self-service or on demand, meaning that even huge quantities of computing resources can be arranged in just a few moments, often with only one mouse click which gives businesses lots of flexibility, and takes stress off capacity planning.
The cloud provides you with easy access to a wide range of technologies so that you can develop quickly and build almost anything you can imagine. It's easy to start up resources when you need them, from infrastructure services like storage, computing, and databases, the Internet of Things, machine learning, analytics, data lakes, and many more.
Cloud computing includes the ability to scale in a flexible manner. In cloud terms, that means providing the correct amount of IT resources like greater or lesser storage capacity, computing power, and bandwidth, at the exact time required and in the appropriate geographical location.
Cloud providers typically offer various technologies, controls, and policies that improve your security all around, protecting your data, apps, and infrastructure from possible security threats.
Cloud computing makes a backup of data, disaster recovery, and business continuity more efficient and more affordable because data can be replicated at multiple redundant sites within cloud providers' networks.
In simple terms, the virtualization process is part of cloud computing in which manual management takes place by using a hypervisor. However, cloud computing processes are self-managed, using the API (Application Program Interface) employed in order to let users self-consume cloud services.