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📝How AWS Works

AWS is a cloud computing provider. It has services to multiple demands of any size.

AWS Global Infrastructure

AWS has a global infra that can attend customers in multiple locations. The infra is composed by:

AWS Regions
  • A regions is a cluster of data centers.
  • They are all around the world and have names (us-east-1, sa-east-1)
AWS Availability Zones (AZ's)
  • Availability Zones (AZ) give customers the ability to operate production applications and databases that are more highly available, fault tolerant, and scalable than would be possible from a single data center.
  • Each region has many AZ. Usually 3, min 2 max 6
  • Each availability zone (AZ) is one or more discrete data centers with redundant power, networking, and connectivity
  • They’re separate from each other, so that they’re isolated from disasters
  • They’re connected with high bandwidth, ultra-low latency networking
  • All AZs together will form a region
  • All traffic between AZs is encrypted

    Each AWS Region consists of multiple, isolated and physically separated availability zones within a geographical area.

AWS Points of Presence/Edge Locations
  • Deliver customer’s content through a worldwide network of Points of Presence (PoP) locations, which consists of Edge Locations and Regional Edge Cache servers.
  • AWS has 216 Points of Presence (205 Edge Locations & 11 Regional Caches) in 84 cities across 42 countries
  • Content is delivered to end users with lower latency
AWS Data Centers
  • Amazon Data Centers where they have the physical computers
AWS Local Zones
  • AWS Local Zones are a new type of AWS infrastructure deployment that places AWS compute, storage, database, and other select services closer to large population, industry, and IT centers.

AWS Use Cases

  • Enterprise IT, Backup & Storage, Big Data analytics
  • Website hosting, Mobile & Social Apps
  • Gaming

AWS Services

AWS Has a large services portfolio. Some of them are available Globally other are scoped by a Region.

AWS Global vs Regional vs AZ

Global
  • IAM (Access Management)
  • Route 53 (DNS Service)
  • CloudFront (CDN)
  • SES (Simple Email Service)
  • WAF (Web Application Firewall)
Region Scoped
  • Amazon EC2 (Infrastructure as a Service - IaaS)
  • AMI (Amazon Machine Image)
  • Elastic Beanstalk (Platform as a Service - PaaS)
  • Lambdas (Function as a Service - FaaS)
  • Rekognition (Software as a Service - SaaS)
  • S3 (has a global console, but this is a Regional Service)
  • VPC (Virtual Private Cloud)
  • DynamoDB
  • Storage Gateway