AWS has officially announced the General Availability (GA) of Rust support in AWS Lambda, marking a major milestone for developers building high-performance serverless applications. Until now, Rust support in Lambda had been classified as experimental, and AWS did not recommend using it for production workloads. With this launch, Rust is now fully supported by AWS, covered under the Lambda Service Level Agreement (SLA), and ready for mission-critical use cases.
Why Rust?
Rust has surged in popularity due to its unique combination of speed, memory efficiency, and compile-time safety guarantees. Its zero-cost abstractions and powerful type system help developers write highly performant code without compromising on safety. Add in a mature tooling ecosystem and robust package management via Cargo, and it’s clear why Rust has become a go-to choice for developers who demand both performance and reliability.
These strengths align perfectly with serverless architectures. Many developers have already been experimenting with Rust for Lambda workloads, such as:
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High-performance APIs
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Event-driven data processing
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IoT and real-time workloads
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Compute-heavy functions with tight resource limits
Now that Rust is officially GA in Lambda, developers can confidently bring these workloads into production.
What GA Support Means for Developers
With Rust now fully supported in AWS Lambda, developers can:
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Build business-critical serverless applications using Rust
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Leverage Lambda’s built-in event integrations, including API Gateway, DynamoDB Streams, SQS, and more
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Benefit from fast scaling from zero, automatic patching, and usage-based pricing
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Receive full AWS Support coverage
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Rely on Rust functions being covered under the Lambda SLA
The GA release also includes improvements to the developer experience, making it simpler than ever to build, test, and deploy Rust-based Lambda functions.
Global Availability
Rust support in AWS Lambda is available in all AWS Regions, including:
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AWS GovCloud (US)
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AWS China Regions
This makes Rust a fully global option for serverless workloads, regardless of compliance or regulatory requirements.
Getting Started
To start building with Rust on AWS Lambda, check out:
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AWS Lambda Documentation: Building Lambda functions with Rust
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AWS Blog Post: Building serverless applications with Rust on AWS Lambda
These guides provide everything you need—from setting up your toolchain, to structuring your project, to packaging and deploying functions.
