Global Infrastructure

Question 1

What makes a global application?

Answer 1

• Decreased latency (geographic locations)
• Disaster recovery
• Attack protection (hard to attack globally)

Question 2

What is the AWS global infrastructure?

Answer 2

• Regions
• AZ’s
• Edge locations

Question 3

Which AWS services make up global applications?

Answer 3

• Route 53 DNS
• Cloudfront content delivery
• S3 Transfer Acceleration
• AWS Global Accelerator

Question 4

Features of Route 53?

Answer 4

• Managed DNS / Domain Registration
• Routing policies - associate multiple ip’s with domain name
• Shield for DDOS protection
• Simple Routing (no health check)
• Weighted Routing (assign weight, health check)
• Latency Routing (route to closest, health check)
• Failover Routing (re-route if down, health check)
• NOTE: a domain name is required so have to buy one from Amazon)

Question 5

Features of Cloudfront ?

Answer 5

• Improved read performance for static content (html, jpg, css)
• content cached at edge locations (using internal AWS network) with lowest latency
• DDOS Protection (uses Shield and AWS Web Application Firewall)

Question 6

How does Cloudfront work?

Answer 6

• Caches S3, S3 HTTP, and any HTTP backend
• Request is checked at Edge location. If cached, immediately server. Else Cloudfront gathers data requested, then caches and serves
• Takes 24 hours to propogate: HTTP 307 error until

Question 7

What is S3 Transfer Acceleration?

Answer 7

• Increase file being transferred/uploaded to S3 Bucket by using private AWS network
• Data 1st loaded to Edge location on public network, then use AWS network to move to final location. Faster

Question 8

What is AWS Global Accelerator ?

Answer 8

• Improve global application availability and performance by using AWS global network
• 2 Anycast IP’s (static) are created for application. Traffic for application is sent on AWS to Edge location.
• So app is accessed ‘locally’ while data is transferred fast on AWS internal network.

Question 9

Difference between Cloudfront and Global Accelerator?

Answer 9

• Cloudfront caches content, GA does not
• Both use Shield for DDoS protection
• GA is for applications, CF for content

Question 10

What is AWS Outposts?

Answer 10

• AWS installed on-premise servers (racks) that contain AWS cloud services
• Now you are responsible for physical security
• Easier migration to AWS cloud