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Amazon Web Services

• Amazon Web Services (AWS) is the market leader in IaaS and PaaS for cloud ecosystems (2019)
• Provides on-demand cloud computing platforms and APIs to individuals, companies, and governments, on a metered pay-as-you-go basis.
  • Most services are not exposed directly to end users, but instead offer functionality through APIs.
  • Offerings are accessed over HTTP, using the REST architectural style and SOAP protocol.
• Provides a set of abstract technical infrastructure and distributed computing building blocks and tools.
• Ensures infrastructure reliability, compliance with security standards, and the ability to instantly grow or shrink your infrastructure to meet your needs.
• The technology is implemented at server farms throughout the world.
• AWS Well-Architected Framework
• AWS Whitepapers & Guides

Pros

• Amazon's biggest strength is its dominance of the public cloud market.
  • AWS is the most mature, enterprise-ready provider.
• With a vast tool set that continues to grow exponentially, Amazon’s capabilities are unmatched.

Cons

• Many enterprises find it difficult to understand the company's cost structure and to manage them.
• Its singular focus on public cloud means that interoperating with your datacenter isn't top priority.

Global infrastructure

• An availability zone (AZ) is one or more discrete data centers.
  • Each with redundant power, networking and connectivity, housed in separate facilities.
• Each region is a distinct location designed to provide high availability to a specific geography.
  • Each region comprises at least two AZs.
• Edge locations are endpoints for AWS that are used for caching content (CloudFront).
  • The number of edge locations >> the number of AZs >> the number of regions.