Amazon Elastic Compute Cloud (Amazon EC2) is flexible service that provides resizable cloud-based compute capacity in the form of EC2 instances.
T3, T2, M5, M4 - instances provide a baseline level of CPU performance with the ability to burst above the baseline.
Features
C5, C4 instances are optimized for compute-intensive workloads and deliver very cost-effective high performance at a low price per compute ratio.
X1, R5, R4, z1d - instances are optimized for highperformance databases, in-memory databases and other memory intensive enterprise applications.
P3, P2, G3, F1 - instances are the latest generation of general purpose GPU instances.
P3 Features:
Use cases:
Amazon EC2 - Storage optimized instances
H1, I3, D2 - instances feature up to 16 TB of HDD-based local storage, deliver high disk throughput, and a balance of compute and memory.
H1 Features:
The original AWS compute type was a shared instance. It is the default and usually cheapest option available. Shared instances are the basis for the cloud. It allows Amazon to oversubscribe its hardware. Many people can actually be leveraging the same physical hardware at the same time without using all of its capacity. The term utility computing comes from the consumer not really caring what machine they are running on, as long as their instances are running.
As your workloads grow in size, or for regulatory reasons, you may need to separate your compute from other AWS customers. In this case, you would choose a dedicated instance. The dedicated type provides you with your own hardware. It helps to avoid noisy neighbors and simplifies compliance. As you are reventing Amazon from taking advantage of any unused capacity, it has a higher cost.
Spot instances are the lowest cost CPU capacity available. As the name implies, these instances can disappear at any time. Amazon will give you a two-minute warning to evacuate your workload. For non-critical, resumable workloads, these are an excellent choice.
Amazon EC2 Spot instances are spare compute capacity in the AWS cloud available to you at steep discounts compared to On-Demand prices.
EC2 Spot enables you to optimize your costs on the AWS cloud and scale your application's throughput up to 10X for the same budget.