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# System prepended metadata

title: 'Notes: AWS Solution Architect (Associate)'

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# Notes: AWS Solution Architect (Associate)

## S3 (Simple Storage Service)
* S3 is an object-based storage, allows file upload
* objects/files are stored in buckets/folder
* bucket names must be unique globally
* upload successful will receive a HTTP 200

### Data Consistency Model in S3
* strong read-after-write for PUTS and DELETES
* provide high durability and availability

### S3 Storage Classes Chart
![S3 Storage Classes Chart](https://i.imgur.com/1LXmoot.png)
