Module 3 - Global Infrastructure and Reliability

Question 1

4 factors for selecting a region

Answer 1

1. Compliance with data governance and legal requirements.
2. Proximity to customers.
3. Available services within region.
4. Pricing.

Question 2

Proximity to customers

Answer 2

Selecting a region that is close to your customers will help you to get content to them faster.

Question 3

Pricing

Answer 3

Cost of services can vary from region to region.

Question 4

Available services within region

Answer 4

Closest region might not have all the features that you want to offer to customers.

Question 5

Compliance with data governance and legal requirements

Answer 5

1. Depending on your company and location, you might need to run your data out of specific areas.
2. Not all companies have location-specific data regulations - might need to focus more on other three factors.

Question 6

Availability Zones

Answer 6

1. Single data centre or group of data centres within a region.
2. Located tens of miles apart from each other.
3. Low latency.
4. Distant enough to reduce chance that multiple Availability Zones affected.

Question 7

Edge Locations

Answer 7

A site that Amazon CloudFront uses to store cached copies of your content closer to your customers for faster delivery.

• Origin, edge location, customer.

Question 8

Origin

Answer 8

Provide content to customers – don’t need to move all content to one region.

Question 9

Edge location

Answer 9

Instead of requiring customer to get data – can cache copy locally at edge location close to your customers.

Question 10

Customer

Answer 10

 Customer requests files.
 Amazon CloudFront retrieves file from cache in edge location and delivers file to customer.
 File delivered to customer faster because it came from edge location instead of original source.

Question 11

Ways to interact with AWS Services

Answer 11

1. AWS Management Console.
2. AWS Command Line Interface (CLI).
3. Software Development Kits (SDKs).

Question 12

AWS Management Console

Answer 12

1. Web-based interface for accessing and managing AWS services.
2. Quickly access recently used services and search for other services by name, keyword, or acronym.
3. Console includes wizards and automated workflows that can simplify the process of completing tasks.
4. Multiple identities can stay logged into AWS Console mobile app at same time.
5. Use AWS Console mobile application to perform tasks e.g. monitoring resources, viewing alarms, accessing billing information.

Question 13

AWS Command Line Interface (CLI)

Answer 13

1. Save time when making API requests.
2. enables you to control multiple AWS services directly from command line within one tool.
3. Windows, macOS, Linux.
4. Can automate actions that your services and applications perform through scripts.

Question 14

Software Development Kits (SDKs)

Answer 14

1. Makes it easier to use AWS services through API designed for your programming language/platform.
2. Use AWS services with existing applications or create entirely new applications that will run on AWS.
3. AWS provides documentation and sample code for each supported programming language e.g. C++, Java, .NET.

Question 15

AWS Elastic Beanstalk

Answer 15

Provide code and configuration settings.

Deploys resources necessary to perform tasks:

• Adjust capacity
• Load balancing.
• Automatic scaling.
• Application health monitoring.

Question 16

AWS Cloud Formation

Answer 16

Can treat infrastructure as code.

can build an environment by writing lines of code instead of using AWS Management Console to individually provision resources.

Provisions your resources in safe, repeatable manner.
o Enabling you to frequently build your infrastructure and applications without having to perform manual actions or write custom scripts.

Determines right operations to perform when managing your stack.

Rolls back changes automatically if detects errors.