5G Edge Computing with AWS Wavelength - Designing Ultra-Low Latency Applications
Learn about running applications at the 5G edge with Wavelength, Wavelength Zone design, and practical use cases.
Wavelength Overview
Wavelength is a service that places AWS compute resources within the 5G networks of major carriers such as Verizon, KDDI, and Vodafone. Traffic from 5G devices is processed within the carrier's network without traversing the internet, achieving single-digit millisecond latency. It is ideal for applications requiring ultra-low latency, such as AR/VR, game streaming, and real-time inference.
Wavelength Zones and Architecture
Wavelength Zones are AWS infrastructure installed within carrier data centers, delivering latency of 10 milliseconds or less (typically 2-5 milliseconds) with access to EC2, EBS, and VPC subnets. You add Wavelength Zone subnets to an existing VPC, connecting 5G edge resources with Region resources (RDS, S3) within the same VPC. A common architecture processes requests from 5G devices on EC2 in the Wavelength Zone while persisting data to DynamoDB or S3 in the Region. In Japan, Wavelength Zones are available in Tokyo and Osaka on KDDI's 5G network.
Application Design Patterns
The fundamental approach is a split architecture where latency-sensitive processing (real-time inference, game servers, video processing) runs in the Wavelength Zone, while backend data stores and management functions reside in the parent Region. EC2 instances in the Wavelength Zone communicate with 5G devices via the carrier gateway and access parent Region services through VPC routing. You can place ECS or EKS tasks/Pods in Wavelength Zone subnets to run container-based edge applications. Auto Scaling handles 5G traffic fluctuations and automatically adjusts capacity during peak periods. For edge inference, deploy SageMaker models to EC2 and process inference requests from 5G devices in milliseconds. For troubleshooting Wavelength, related books (Amazon) can be a helpful reference.
Wavelength Pricing and Constraints
EC2 instances in Wavelength Zones follow the same pricing structure as the parent Region, but available instance types are limited. Data transfer via the carrier gateway is subject to carrier data transfer charges, which differ from Region internet-bound data transfer rates. Data transfer between a Wavelength Zone and the parent Region is priced the same as cross-AZ transfer (approximately $0.01/GB). Available carriers and locations are limited, so you need to verify the geographic distribution of your target users and carrier coverage in advance. AWS services available in Wavelength Zones are limited to EC2, EBS, VPC, ECS, EKS, IAM, CloudWatch, and others - RDS and S3 must be used from the parent Region.
Summary
The decision to adopt Wavelength hinges on whether your application requires latency below 10 milliseconds. If 20-50 milliseconds of latency from a standard Region is acceptable, the cost and operational complexity of Wavelength are not justified. When adopting it, use a split architecture that places only latency-sensitive processing at the edge while keeping data persistence and analytics in the Region. Since supported carriers and Regions are limited, verify available locations in advance.