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Elastic Compute Service (ECS) is Alibaba Cloud's primary compute service, providing scalable virtual servers in the cloud. ECS is the equivalent of AWS EC2 or Azure Virtual Machines.
An ECS instance is a virtual server that you can use to run applications. You choose the:
Alibaba Cloud organises ECS instances into families, each optimised for different workloads:
| Family | Optimised For | Example Use Case |
|---|---|---|
| g (General Purpose) | Balanced CPU and memory | Web servers, app servers |
| c (Compute Optimised) | High CPU-to-memory ratio | Batch processing, CI/CD |
| r (Memory Optimised) | High memory-to-CPU ratio | In-memory databases, caching |
| i (Local SSD) | High I/O performance | NoSQL databases, data warehousing |
| e (Cost-effective) | Economy workloads | Dev/test environments |
| hfg (High Frequency) | High clock speed | Gaming, ad serving |
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