Created : March 24, 2020

This note was taken while learning AWS on Udemy.



  • separate geographical area. (physical location)
  • consists of 2 or more Availability Zones.

AZ (Availability Zone)

  • one or more discrete data centers within an AWS region.
  • to be isolated from failures.
  • each with redundant power, networking and connectivity, housed in separate facilities.

Edge location

  • endpoints for AWS which are used for caching content.
  • 시드니에 있는 유저가 뉴욕 서버에 있는 파일을 다운받을 경우 시드니 edge location에 캐싱해놓고, 다음에 시드니에 있는 다른 누군가가 다운받으려고 할때 뉴욕 서버에서 또 받아오는 게 아니라 시드니 edge location에서 파일을 받아옴

개체수 : Edge locations > AZ's > Regions

IAM (Identity and Access Management)

allows you to manage users and their level of access to the AWS Console.


  • centralised control
  • shared access
  • granular(세분화된) permissions
  • identity federation (incl. Active Directory, Facebook, LinkedIn, ...)
  • multi-factor authentication
  • provide temporary access for users/devices/services
  • can create your own password rotation policy (주기적으로 비밀번호 변경하도록 하게함)
  • integrate with many different AWS services
  • support PCI DSS compliance (compliance framework)
  • universal = global (doesn't apply to regions)
  • new user has NO access
  • new user is assigned Access Key ID & Secret Access Keys when first created.

    • not same as password
    • can view only once. (if lose, must regenerate.)

Key terminology for IAM

  1. Users : end users (e.g. people, employees)
  2. Groups : a collection of users
  3. Policies : made up of docs (in a JSON format). give permissions.
  4. Roles : create roles and assign them to AWS resources.