AWS Global Accelerator

AWS Global Accelerator is a networking service that improves the performance and availability of applications running on AWS by providing a global network infrastructure. It is important because it helps reduce latency, increase throughput, and enhance the overall user experience for applications accessed by globally distributed users.

What is AWS Global Accelerator?
AWS Global Accelerator is a fully managed service that directs traffic to optimal endpoints over the AWS global network. It uses anycast IP addresses and AWS's global network to route traffic to the nearest edge location, thus minimizing the distance data travels.

How it works:
1. Create an accelerator and specify one or more listeners.
2. Associate the accelerator with regional endpoints, such as Application Load Balancers, Network Load Balancers, or EC2 instances.
3. AWS Global Accelerator directs client traffic to the optimal endpoint based on factors like location, latency, and health of the endpoints.
4. Traffic is routed through the AWS global network, bypassing the public internet and reducing latency.

Exam Tips: Answering Questions on AWS Global Accelerator
1. Understand the benefits of AWS Global Accelerator, such as improved performance, availability, and security.
2. Know when to use AWS Global Accelerator, such as for latency-sensitive applications or applications with a global user base.
3. Differentiate between AWS Global Accelerator and other AWS services like Amazon CloudFront and AWS Transit Gateway.
4. Be familiar with the components of AWS Global Accelerator, such as accelerators, listeners, and endpoint groups.
5. Understand how AWS Global Accelerator integrates with other AWS services, such as Elastic Load Balancing and Amazon EC2.

Remember, AWS Global Accelerator is designed to improve the performance and availability of applications by leveraging the AWS global network infrastructure. It is particularly useful for applications with a global user base or those that require low latency and high availability.