Module 3: Global Infrastructure and Reliability

Criteria for Selecting a Region

- Compliance with data governance and legal requirements - Proximity to your customers - Available services within a Region - Pricing

3 Ways to interact with AWS services

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

Availability Zones

An Availability Zone is a single data center or a group of data centers within a Region. Availability Zones are located tens of miles apart from each other. This is close enough to have low latency (the time between when content requested and received) between Availability Zones. However, if a disaster occurs in one part of the Region, they are distant enough to reduce the chance that multiple Availability Zones are affected.

Edge Locations

An edge location is a site that Amazon CloudFront uses to store cached copies of your content closer to your customers for faster delivery.

AWS Software Development KIts (SDKs)

Another option for accessing and managing AWS services is the software development kits (SDKs). SDKs make it easier for you to use AWS services through an API designed for your programming language or platform. SDKs enable you to use AWS services with your existing applications or create entirely new applications that will run on AWS. To help you get started with using SDKs, AWS provides documentation and sample code for each supported programming language. Supported programming languages include C++, Java, .NET, and more.

AWS Management Console

The AWS Management Console is a web-based interface for accessing and managing AWS services. You can quickly access recently used services and search for other services by name, keyword, or acronym. The console includes wizards and automated workflows that can simplify the process of completing tasks. You can also use the AWS Console mobile application to perform tasks such as monitoring resources, viewing alarms, and accessing billing information. Multiple identities can stay logged into the AWS Console mobile app at the same time.

Which statement is TRUE for the AWS global infrastructure?

The correct response option is A Region consists of two or more Availability Zones. For example, the South America (São Paulo) Region is sa-east-1. It includes three Availability Zones: sa-east-1a, sa-east-1b, and sa-east-1c.

Which statement best describes Amazon CloudFront?

The correct response option is A global content delivery service. Amazon CloudFront is a content delivery service. It uses a network of edge locations to cache content and deliver content to customers all over the world. When content is cached, it is stored locally as a copy. This content might be video files, photos, webpages, and so on. The other response options are incorrect because: - AWS Outposts is a service that enables you to run infrastructure in a hybrid cloud approach. - AWS Fargate is a serverless compute engine for containers. - Amazon Simple Queue Service (Amazon SQS) is a service that enables you to send, store, and receive messages between software components through a queue.

Which statement best describes an Availability Zone?

The correct response option is A single data center or group of data centers within a Region. The other response options are incorrect because: - A Region is a geographical area that contains AWS resources. - An edge location is a data center that an AWS service uses to perform service-specific operations. Edge locations are examined in the next section of this module. - AWS Outposts is a service that you can use to run AWS infrastructure, services, and tools in your own on-premises data center in a hybrid approach. AWS Outposts is explored later in this module.

Which site does Amazon CloudFront use to cache copies of content for faster delivery to users at any location?

The correct response option is Edge location. The other response options are incorrect because: - A Region is a separate geographical location with multiple locations that are isolated from each other. - An Availability Zone is a fully isolated portion of the AWS global infrastructure. - An origin is the server from which CloudFront gets your files. Examples of CloudFront origins include Amazon Simple Storage Service (Amazon S3) buckets and web servers. Note: Amazon S3 is explored later in this course.

Which action can you perform with AWS Outposts?

The correct response option is Extend AWS infrastructure and services to your on-premises data center. The other response options are incorrect because: - The AWS Command Line Interface (AWS CLI) is used to automate actions for AWS services and applications through scripts. - The AWS Management Console includes wizards and workflows that you can use to complete tasks in AWS services. - Software development kits (SDKs) enable you to develop AWS applications in supported programming languages.

Which factors should be considered when selecting a Region? (Select TWO.)

The correct two response options are: Compliance with data governance and legal requirements Proximity to your customers Two other factors to consider when selecting a Region are pricing and the services that are available in a Region. The other response options are incorrect because: - The level of support that you choose is not determined by Region. AWS Support plans are explored later in this course. - Assigning custom permissions to different users is a feature that is possible in all AWS Regions. - The AWS Command Line Interface (AWS CLI) is available in all AWS Regions.

AWS Command Line Interface (CLI)

To save time when making API requests, you can use the AWS Command Line Interface (AWS CLI). AWS CLI enables you to control multiple AWS services directly from the command line within one tool. AWS CLI is available for users on Windows, macOS, and Linux. By using AWS CLI, you can automate the actions that your services and applications perform through scripts. For example, you can use commands to launch an Amazon EC2 instance, connect an Amazon EC2 instance to a specific Auto Scaling group, and more.

AWS CloudFormation

With AWS CloudFormation, you can treat your infrastructure as code. This means that you can build an environment by writing lines of code instead of using the AWS Management Console to individually provision resources. AWS CloudFormation provisions your resources in a safe, repeatable manner, enabling you to frequently build your infrastructure and applications without having to perform manual actions. It determines the right operations to perform when managing your stack and rolls back changes automatically if it detects errors.

AWS Elastic Beanstalk

With AWS Elastic Beanstalk, you provide code and configuration settings, and Elastic Beanstalk deploys the resources necessary to perform the following tasks: - Adjust capacity - Load balancing - Automatic scaling - Application health monitoring