original file
i was absent bc of lasare, this was discussed f2f

Module 3: AWS Global Infrastructure

• designed and built to deliver a flexible, reliable, scalable, and secure cloud computing environment with high-quality global network performance
• AWS continually updates the global infrastructure footprint
  • Global Infrastructure Map: https://aws.amazon.com/about-aws/global-infrastructure/#AWS_Global_Infrastructure_Map
  • Regions and Availability Zones: https://aws.amazon.com/about-aws/global-infrastructure/regions_az/ (with Regions, Edge Locations, Local Zones, and Regional Caches)

AWS Regions

• an AWS Region is a geographical area
• data replication across Regions is controlled by you
• communication between Regions uses AWS backbone network infrastructure
• each Region provides full redundancy and connectivity to the network
• a Region typically consists of 2+ Availability Zones

Selecting a Region

determine the right Region for your services, applications, and data based on these factors

• data governance, legal requirements
• proximity to customers (latency)
• services available within the Region (as in AWS services you're gonna use i think)
• Costs (varies by Region)

Availability Zones

• each Region has multiple Availability Zones
• each Availability Zone is a fully-isolated partition of the AWS infrastructure
  • AZs consist of discrete data centers
  • designed for fault isolation
  • interconnected with other AZs by using high-speed private networking
  • you choose your AZs
  • AWS recommends replicating data and resources across Availability Zones for resiliency

AWS Data Centers

• designed for security
• data centers are where the data resides and data processing occurs
• each data center has redundant power, networking, and connectivity, and is housed in a separate facility
• a data center typically has 50-80k physical servers

Points of Presence

• AWS provides a global network of Points of Presence locations
• consists of edge locations and a much smaller number of Regional edge caches
• used with Amazon CloudFront
  • a global Content Delivery Network (CDN) that delivers content to end users with reduced latency
• Regional Edge Caches used for content with infrequent access

AWS Infrastructure Features

• Elasticity and scalability
  • elastic infrastructure; dynamic adaption of capacity
  • scalable infrastructure; adapts to accommodate growth
• Fault Tolerance
  • continues operating properly in the presence of a failure
  • built-in redundancy of components
• High availability
  • high level of operational performance
  • minimized downtime
  • no human intervention (automated)