How to deploy FastAPI on AWS lambda with docker in 2025

📰 Dev.to · Devin

Deploy FastAPI on AWS Lambda using Docker in 2025 for scalable serverless architectures

intermediate Published 3 Jun 2025

Action Steps

Create a FastAPI project using the command `fastapi init` to set up the basic directory structure
Build a Docker image for the FastAPI application using the command `docker build -t fastapi-lambda`
Configure AWS Lambda to use the Docker image by creating a new Lambda function and selecting 'Container image' as the runtime
Test the deployment by sending a request to the Lambda function using a tool like Postman or cURL
Monitor and debug the application using AWS CloudWatch logs and metrics

Who Needs to Know This

Backend developers and DevOps engineers can benefit from this tutorial to deploy FastAPI applications on AWS Lambda using Docker, improving scalability and efficiency

Key Insight

💡 Using Docker to deploy FastAPI on AWS Lambda enables scalable and efficient serverless architectures