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Cloud computing is the delivery of computing services over the internet. Instead of owning and maintaining your own physical data centers and servers, you rent these services from a cloud provider like Microsoft Azure. These services include things like storage, processing power, and software. The key idea is that you access these resources on-demand, paying only for what you use, much like you pay for utilities such as electricity or water.
Using cloud services offers several key advantages over traditional on-premises IT. The first is cost savings, as you avoid the large upfront expense of buying hardware and only pay for the resources you consume. This leads to the second benefit, scalability, which means you can instantly increase or decrease your resources to match your current needs. Third is performance and speed, because cloud providers run their data centers on modern hardware and maintain a global network. Finally, cloud services offer reliability and security, as providers manage data backup, disaster recovery, and physical security, often at a level most individual companies cannot achieve on their own.
Cloud services are typically offered in three main models, which represent different levels of management responsibility shared between you and the cloud provider. Infrastructure as a Service (IaaS) is the most flexible model. Here, you rent fundamental IT infrastructure like virtual machines, networks, and storage. You manage the operating systems, data, and applications, while the provider manages the physical hardware. Platform as a Service (PaaS) is designed for developers. It provides a managed environment for building, testing, and deploying applications. You focus on your code and data, while the provider manages the underlying servers, storage, and networking. Software as a Service (SaaS) delivers complete applications over the internet. You simply use the software, like email or office applications, while the provider manages everything else, from the infrastructure to the application itself.
Prepare and test your skills
Prepare and test your skills
Cloud computing is the delivery of computing services over the internet, where you rent services like storage, processing power, and software from a cloud provider instead of owning physical data centers. You access these resources on-demand and pay only for what you use, similar to paying for utilities.
The key benefits include cost savings by avoiding large upfront hardware expenses and paying only for consumed resources, scalability to instantly adjust resources to match needs, performance and speed from modern hardware and global networks, and reliability and security from provider-managed data backup, disaster recovery, and physical security.
IaaS provides fundamental IT infrastructure like virtual machines, networks, and storage; you manage the operating systems, data, and applications while the provider manages physical hardware. PaaS offers a managed environment for building, testing, and deploying applications; you focus on code and data while the provider manages servers, storage, and networking. SaaS delivers complete applications over the internet; you simply use the software while the provider manages everything from infrastructure to the application itself.
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