Fundamentals of cloud computing

Cloud computing according to top public cloud providers:

Cloud computing is the on-demand delivery of IT resources over the Internet with pay-as-you-go pricing. Instead of buying, owning, and maintaining physical data centers and servers, you can access technology services, such as computing power, storage, and databases, on an as-needed basis — AWS

Top public cloud service providers in 2022 are :

1. Amazon Web Services
2. Microsoft Azure
3. Google Cloud
4. IBM Cloud
5. Alibaba Cloud
6. Oracle Cloud
7. Tencent Cloud

Magic Quadrant for Cloud Infrastructure and Platform Services

Types of cloud computing

• Public Cloud : Owned and operated by third party cloud service providers
• Private cloud : Cloud computing resources used exclusively by single business or organization.
• Hybrid Cloud : Combination of public and private clouds

Characteristics

• Agility : easy access to a broad range of technologies so that you can innovate faster
• Cost : eliminates the capital expense of buying hardware and software and setting up and running on-site datacenters
• Performance : worldwide network of secure datacenters, with latest generation of fast and efficient computing hardware
• Scalability : dynamic (“on-demand”) provisioning of resources on a fine-grained, self-service basis in near real-time
• Reliability : data backup, disaster recovery and business continuity easier and less expensive
• Security : broad set of policies, technologies and controls that strengthen your security posture
• Multitenancy : enables sharing of resources and costs across a large pool of users

Service models

These are some fundamentals of cloud computing. Will post more in detail about each of these in future.