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 suitable for applications that require 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.
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 USD 0.01/GB) (as of August 2026). 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.
Use Cases Where Ultra-Low Latency Matters
Wavelength is a mechanism that places AWS environments within carrier networks so that mobile devices can reach them with very short delays. This characteristic pays off in uses where even a slight delay harms the experience. Representative examples include immersive applications such as AR and VR, competitive games, processing that analyzes video in real time, control of autonomous driving and connected cars, and IoT that monitors and controls factory equipment in real time. These cannot meet their requirements if data has to make a round trip to a distant data center. By processing near the devices, you can build applications that require immediate responsiveness.
Architecture Design
The key point in a design that uses Wavelength is to separate what is processed at the edge near the devices from what is processed in a standard Region. The basic division of roles is to place immediate processing that requires low latency at the edge, and to put large-scale data accumulation, batch analysis, and management functions on the Region side. Link the edge and the Region over the network, and aggregate the results processed at the edge. Rather than placing everything at the edge, carefully select and place only the latency-sensitive parts, so that you can put the limited resources at the edge to good use. The key is a design that breaks down applications by latency requirements and places each part in an appropriate location.
Comparison with Other Edge Options
AWS has multiple options for processing at the edge, and you choose among them according to your requirements. Wavelength specializes in ultra-low latency from mobile networks. If you want performance close to a Region in a specific metropolitan area, Local Zones is suitable. If you want to place an AWS environment at your own sites, Outposts is an option. If you only want to speed up the delivery of static content, CloudFront is sufficient. The optimal means changes depending on whether ultra-low latency for mobile devices is essential, whether geographic proximity is the goal, or whether on-premises installation is a requirement. It is important to clarify what you want to solve before you choose.
Constraints and Operational Considerations
Because Wavelength is a special environment, you need to understand several constraints when you use it. Because fewer AWS services are available at the edge than in a standard Region, build the processing you place at the edge with only the minimum necessary functions. Because the available coverage depends on the networks and areas of the supported carriers, confirm that the locations of your target users match the service areas. Because edge resources have physical upper limits, manage capacity in a planned way. Designing a realistic configuration that combines the edge and the Region on the premise of these constraints is the key point when you make use of Wavelength.
Summary
The criterion for deciding whether to adopt Wavelength is whether your application's latency requirement is 10 milliseconds or less. If a latency of 20-50 milliseconds in a standard Region is acceptable, the cost and operational complexity of Wavelength are not worth it. When you adopt it, a split architecture that places only latency-sensitive processing at the edge and performs data persistence and analysis in the Region is recommended. Because the supported carriers and Regions are limited, verify the available locations in advance.
References (Official AWS Resources)
The primary sources for this page are the official AWS website and documentation. Check the official pages below for the latest specifications and pricing.
- AWS Wavelength official page
- Amazon EC2 official page
- Amazon VPC official page
- AWS Documentation (official)
If this page and the official documentation disagree, treat the official documentation as authoritative.