Blob

 ┌────────────────────────────────────┐ 
┌┤           Load Balancer            ├┐
│└────────────────────────────────────┘│
│┌─────────────────┐┌─────────────────┐│
││┌─────┐┌────────┐││     ┌─────┐     ││
│││web 1││worker 1│││     │web 2│     ││
││└─────┘└────────┘││     └─────┘     ││
││      VM 1       ││      VM 2       ││
│└─────────────────┘└─────────────────┘│
│              ┌────────┐              │
│              │Database│              │
│              └────────┘              │
│                 VPC                  │
└──────────────────────────────────────┘
 ┌──────┐┌─────┐┌───┐┌──────┐┌──┐┏━━━━┓ 
 │Crypto││Image││Log││Metric││KV│┃Blob┃ 
 └──────┘└─────┘└───┘└──────┘└──┘┗━━━━┛ 

A Blob service provides a way to save arbitrary sized unstructured data in a HA fashion.

We need a Blob service to put and get data that could be very large like application secret data or build logs.

A Blob service is a stand-alone service.