Haruto Mori
IT engineer at DAIKIN INDUSTRIES, LTD. (Japan), working across the full stack—infrastructure, frontend, and backend development. Primarily writes Python and TypeScript.
Currently building energy optimization tools that analyze HVAC system data to generate operational improvement proposals.
Works in a Scrum-based team environment and has experience contributing to open source projects.
In personal development, enjoys experimenting with Cloudflare Workers for serverless applications.
Session
Modern web frameworks such as Hono have renewed interest in schema-driven development and the “Lambdalith” architecture, where an application is delivered as a single AWS Lambda function. While this model provides a predictable developer experience, Python-based serverless systems often struggle to achieve the same consistency, validation, and maintainability in production.
Deploying Python web frameworks to AWS Lambda frequently requires additional execution layers—such as ASGI adapters or container-based runtimes—which add complexity and blur data boundaries. For teams that prefer clear, minimal Lambda handlers, these abstractions can hinder both development and operations.
This session shares production-proven patterns for building schema-driven Lambdalith applications in Python using AWS Lambda Powertools and Pydantic, without relying on heavy framework abstractions. Through real-world examples, we show how these tools simplify handler logic, standardize request and response validation, and improve observability and error handling.
Attendees will leave with practical techniques for building reliable and maintainable Python Lambdalith systems, and insights they can immediately apply to modernizing existing serverless codebases or delivering new production services with confidence.