Global Accelerator (GA) is a network acceleration service that routes traffic through Alibaba Cloud's global BGP network to the nearest access point, reducing latency, jitter, and packet loss.
Instance types
Standard GA instances
Standard GA instances support multiple access modes and provide a Global Accelerator network for end-to-end acceleration of backend services.
Access modes
Standard GA instances support access via accelerated IP addresses or CNAMEs. Traffic is routed to the nearest access point on the Alibaba Cloud global transmission network.
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Accelerated IP address
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Elastic IP Address (EIP): GA provides separate EIP per acceleration region. Users connect to GA through region-specific EIPs.
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Anycast Elastic IP Address (Anycast EIP): GA provides two Anycast EIPs spanning multiple regions worldwide. Users automatically connect to the nearest access point through Anycast EIPs.
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CNAME
Map your domain name to the CNAME assigned by GA to accelerate backend service access.
Acceleration network
Standard GA instances connect users across acceleration regions to backend servers and accelerate traffic at Layer 4 (TCP/UDP) and Layer 7 (HTTP/HTTPS). Standard GA instances also support nearby TCP termination and SSL offloading to further improve performance.
GA forwards client requests to endpoints based on the listener's routing type, optimizing transmission quality and reducing latency and jitter.
Backend service connection
GA supports the following network connections to backend services:
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Private network connection: For Alibaba Cloud endpoints. Supported endpoint types include Elastic Compute Service (ECS) instances in VPCs, Application Load Balancer (ALB) instances, Network Load Balancer (NLB) instances, Classic Load Balancer (CLB) instances in VPCs, Object Storage Service (OSS), Elastic Network Interface (ENI), custom private IP addresses, and vSwitches (vSwitch). This keeps backend services off the public internet.
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Internet connection: For endpoints outside Alibaba Cloud, including internet-facing CLB instances, Alibaba Cloud public IP addresses, custom public IP addresses, and custom domain names.
Basic GA instances
Basic GA instances provide point-to-point acceleration using Alibaba Cloud's global network bandwidth and transmission network.
Access modes
Basic GA instances support only EIP-based accelerated IP addresses. Clients connect to an access point of the Alibaba Cloud global transmission network by sending requests to an accelerated IP address.
Acceleration network
Basic GA instances provide one-to-one acceleration between acceleration regions and backend server regions at Layer 3 (IP) only.
GA distributes traffic to endpoints based on the mappings between accelerated IP addresses and endpoints.
Backend service connection
GA forwards client requests to endpoints over private networks. Supported endpoint types include secondary ENIs, CLB instances in VPCs, internal-facing NLB instances, and Elastic Compute Service (ECS) instances.
Benefits
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High quality
GA uses stable BGP lines, the Alibaba Cloud global transmission network, and worldwide access points to reduce latency, jitter, and packet loss.
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High availability
GA manages traffic across regions and endpoints to prevent disruptions from regional or connection failures. GA monitors endpoint health and automatically schedules traffic to ensure continuity.
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High security and reliability
GA supports network ACLs and integrates with Alibaba Cloud security services to protect applications and endpoints from attacks.
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Easy deployment
GA deploys within minutes with centralized monitoring and maintenance, simplifying the management of global resources.
Free trial
Specific GA instances and bandwidth plans are available for a one-month free trial. [Trial Activity] Time-limited one-month free trials.