What are the different types of EC2 instances?

Amanda

I would like to understand the various types of Amazon EC2 (Elastic Compute Cloud) instances and how they are designed to meet different workload requirements. What are the differences between instance families such as General Purpose, Compute Optimized, Memory Optimized, Storage Optimized, and Accelerated Computing, and how do they affect performance, cost, and use cases? Additionally, how do factors like vCPU count, memory, network performance, and pricing models (On-Demand, Reserved, Spot) influence the selection of EC2 instances for applications such as web servers, databases, machine learning workloads, or high-performance computing? How do organizations decide which instance type is the most suitable for their specific cloud workloads?

Emily

Amazon EC2 offers different instance types designed for specific workloads. General Purpose instances balance compute, memory, and networking for common applications, while Compute Optimized focuses on CPU-heavy tasks, Memory Optimized on large datasets, Storage Optimized on high I/O storage needs, and Accelerated Computing on GPU-powered workloads like machine learning. Factors such as vCPU count, memory, network performance, and pricing models—On-Demand, Reserved, or Spot—help organizations choose the right instance for web servers, databases, or high-performance computing, balancing cost and performance efficiently.