AWS Global Infrastructure Flashcards

What is Amazon Route 53?

Answer: A scalable Domain Name System (DNS) web service

Amazon Route 53 is a highly available and scalable DNS web service that routes end users to applications running in AWS or anywhere on the internet.

Which AWS service provides a dedicated private connection from your on-premises network to AWS, bypassing the public internet?

Answer: AWS Direct Connect

AWS Direct Connect establishes a dedicated network connection from your premises to AWS, providing more consistent network performance than internet-based connections.

What is an AWS Local Zone used for that differs from a standard Availability Zone?

Answer: Local Zones place compute resources in metropolitan areas for single-digit millisecond latency near end users

Local Zones extend AWS services to large cities where a full AWS Region doesn't exist, enabling ultra-low latency for applications that require it.

How does Amazon CloudFront improve the performance of web applications?

Answer: By caching content at edge locations close to end users worldwide

CloudFront is a content delivery network (CDN) that caches copies of your content at hundreds of edge locations globally, reducing latency for end users.

What is the relationship between an AWS Region and its Availability Zones?

Answer: A Region is a collection of multiple AZs that are physically separated but interconnected

A Region consists of multiple physically separate but interconnected AZs, allowing customers to build highly available applications within a geographic area.

Which AWS infrastructure tier is the largest in number, with hundreds of locations worldwide?

Answer: Edge Locations / Points of Presence

AWS has hundreds of Points of Presence (edge locations and regional edge caches) used by CloudFront and Route 53 — far more than Regions or AZs.