Terms

• Single Tenant: Hardware specifically assigned to one customer
• Mult-tenant: Mulitple customers using same hardware but each customer has no visibility of other customers using the same and also no access.
• Storage Redundancy: Redundancy is all about having multiple copies
  • AZ based Redundancy: Multiple copies in multiple AZ’s of same region
  • Region Based Redundancy: Mulitple copies in multiple Regions.
• Latency: Time taken by a network packet to reach to destination. Latency from your system to different AWS regions Refer Here

Global infrastructure in AWS

• Regions & AZs: Refer Here
  
• Edge Locations:
  • Refer Here
  • Only for 2 purposes:
    • Point of Presence for Content Delivery Networks
    • To provide direct connectivity between on-premises and AWS Global Network.
• Global Network