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Amazon EC2 Virtualization Overview An Amazon EC2 (Elastic Compute Cloud) instance is essentially a virtual machine (VM) that runs on a physical host server within Amazon's data centers. The virtualization layer allows multiple isolated EC2 instances to run on the same physical hardware. ________________________________________ Key Components 1. EC2 Instance – The virtual machine you run in the AWS cloud. 2. vCPUs (Virtual CPUs) – The processing units allocated from the host’s physical CPUs. 3. RAM (Memory) – Virtualized memory resources assigned to the instance. 4. Instance Store – Temporary, physically attached storage directly on the host server. 5. Host Server – The underlying physical hardware managed by AWS that runs multiple instances. ________________________________________ Storage & Networking • Amazon EBS (Elastic Block Store) – Persistent, network-attached storage for EC2 instances. • Amazon S3 (Simple Storage Service) – Scalable object storage, often used for backups or static content. • EBS-Optimized Instances – Instances configured for high-throughput, low-latency connections to EBS. • Networking – Virtual network interfaces connect your instance to other AWS services and the internet. ________________________________________ Connectivity • Internet – Provides public access to your instance via Elastic IP or public DNS. • Amazon EC2 Networking – Includes private subnets, public subnets, and VPCs. • AWS Services Integration – EC2 integrates seamlessly with S3, EBS, and other AWS services.