📖 What is AWS Global Accelerator?
AWS Global Accelerator is a service that directs end-user traffic to optimal endpoints based on network conditions, improving application availability and performance. It utilizes the AWS global network and provides static Anycast IP addresses for consistent access points worldwide, reducing latency and enhancing resilience.
"Distinguish Global Accelerator from CloudFront. Global Accelerator is best for applications requiring consistent IP addresses and low latency for interactive applications, while CloudFront excels at content delivery. Understand the benefits of Anycast routing and its impact on performance."
📚 Certification: AWS Certified Solutions Architect - Associate (SAA-C03)
🔑 What are the Key Concepts of AWS Global Accelerator?
- ▸ Global Accelerator uses Anycast IP addresses, providing a single, static entry point for applications, improving DNS resolution and reducing DNS-related downtime.
- ▸ It improves application availability by automatically routing traffic to healthy endpoints across multiple AWS Regions, enhancing resilience against failures.
- ▸ Global Accelerator is ideal for applications needing consistent IP addresses, like gaming, VoIP, and financial trading, where frequent IP changes are problematic.
- ▸ Unlike CloudFront, Global Accelerator doesn’t cache content; it accelerates traffic to your existing application servers, making it suitable for dynamic content.
- ▸ It integrates with Network Load Balancers (NLBs) and Application Load Balancers (ALBs) to distribute traffic efficiently and scale applications globally.
🎯 How does AWS Global Accelerator appear on the SAA-C03 Exam?
You may be asked to identify the AWS service that would best improve the performance of a globally distributed, interactive gaming application requiring low latency and consistent IP addresses.
A scenario might describe a company experiencing intermittent connectivity issues to their application from various geographic locations – determine how Global Accelerator can resolve this.
Expect questions about choosing between Global Accelerator and CloudFront based on application requirements, specifically focusing on whether caching is needed or if consistent IPs are critical.
❓ Frequently Asked Questions
When would I choose Global Accelerator over a Regional Load Balancer?
Use Global Accelerator when you need to improve global application availability and performance by leveraging AWS’s global network and static Anycast IPs, especially for interactive applications. Regional Load Balancers serve traffic within a single region.
Does Global Accelerator provide DDoS protection?
Global Accelerator integrates with AWS Shield to provide DDoS protection. It absorbs and mitigates attacks at the edge of the AWS network, protecting your application infrastructure from malicious traffic.
How does Global Accelerator handle endpoint failures?
Global Accelerator continuously monitors the health of your endpoints. If an endpoint becomes unhealthy, it automatically redirects traffic to the next available healthy endpoint, ensuring high availability.