Definition
Amazon Elastic Compute Cloud, or EC2, is a foundational cloud computing service that provides secure, resizable compute capacity in the cloud. It allows users to rent virtual servers, known as instances, on which they can run their own applications. These instances can be configured with various operating systems, storage options, and networking capabilities to meet specific workload demands. EC2 instances are managed through a web interface or APIs, enabling users to launch, stop, and monitor them easily. This service is crucial for scalability and cost efficiency, as organizations only pay for the compute resources they consume. For example, a startup might use EC2 to host its website, scaling up or down based on user traffic. Unlike dedicated servers, EC2 offers on-demand provisioning and elasticity, making it distinct from traditional on-premises infrastructure. Knowledge of EC2 is essential for AWS certification exams like the AWS Certified Solutions Architect Associate and cloud security certifications such as CCSP.