Cloud computing is a general term for anything involving the delivery of hosted services through the internet.
A cloud may be both private and public. A public cloud sells services to anybody with access to the internet. A private cloud is a proprietary network or cloud server that provides hosted services to a small group of individuals with restricted access and rights. The purpose of cloud computing is whether private or public, is to give simple, saleable access to computer resources and IT services.
The hardware and software components necessary for the correct deployment of a cloud computing architecture that are referred as cloud infrastructure. Cloud computing is also known as utility computing or on-demand computing.
The term cloud computing was inspired by the cloud symbol, which is frequently used in flowcharts and diagrams to represent the internet.
Types of cloud computing services
IaaS (Infrastructure as a Service)
IaaS is a cloud computing system in which external cloud providers sell and maintain spiritualized infrastructure to organization. IaaS allows businesses to outsource storage, servers, data center, and cloud networking components linked over the internet, providing equivalent functionality to on-premises infrastructure.
IaaS operations such as website hosting, backup, recovery, internal networking, monitoring, clustering and are examples of automated, policy-driven operations. The service provider is in charge of constructing the servers and storage, as well as the networking firewalls/security and the physical database servers.
Amazon EC2, Microsoft Azure, Google Cloud Platform (GCP), GoGrid, Rackspace and DigitalOcean are among the key providers of IaaS.
PaaS (Platform as a service)
IaaS is the foundation for PaaS. Cloud suppliers supply cloud software and hardware infrastructure components such as software and operating systems, which are necessary to create and test applications, through PaaS. Users may install and host data sets, development tools, and business analytic apps in a PaaS environment without having to worry about the infrastructure.
Bluemix, CloudBees, Salesforce.com, Google App Engine, Heroku, Amazon Web Services (AWS), Microsoft Azure, OpenShift, Oracle Cloud, and SAP are some of the leading PaaS providers.
Software as a Service (SaaS)
SaaS is different in that it combines IaaS and PaaS. With SaaS, the cloud service provider offers a pay-per-use option for the complete software package. Users can access software applications such as emails through the internet using SaaS.
Microsoft Office 360, AppDynamics, Adobe Creative Cloud, Google G Suite, Zoho, Salesforce, Marketo, Oracle CRM, Pardot Marketing Automation, and SAP Business ByDesign are some of the most well-known SaaS apps.
