What Cloud Computing Means in Practice

This lesson explains what cloud computing means in practical business and technical terms. You will learn how cloud services replace large up-front infrastructure purchases with on-demand access to computing, storage, databases, networking, and software services delivered over the internet.

The focus is on core cloud ideas that matter for the AWS Certified Cloud Practitioner exam: on-demand self-service, elasticity, resource pooling, measured usage, and broad network access. You will also see how these ideas show up in real situations such as launching a website, storing backups, supporting remote teams, and handling traffic spikes without buying permanent hardware.

By the end of the lesson, you should be able to explain why organizations move to the cloud, when cloud is useful, and how to distinguish cloud computing from simply hosting servers in a traditional data center. This sets up later lessons on AWS global infrastructure, cloud service models, pricing, security, and shared responsibility.