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# Introducing JSON Structure


- **Date:** Friday, Jul 10, 2026
- **Time:** 10:20–10:50 (30 min)
- **Room:** Stage 7
- **Event:** World Congress 2026 Europe

## Recording

[Watch recording](https://www.wearedevelopers.com/videos/100219-introducing-json-structure)

## Description

JSON Structure, an IETF Internet Draft, is a strictly typed data definition language for code generation and database mapping. Unlike JSON Schema, it enforces strict types and determinism. It adds extended primitives (e.g., int32) and compound types to ensure precise data modeling for modern polyglot applications. It's a better JSON schema than JSON Schema while retaining the familiar structure.

In this session by the primary author of the specs, you will learn about the JSON Structure core and extension specs and the SDK tools that come with it.

## Speaker

### [Clemens Vasters](https://www.wearedevelopers.com/@clemens-vasters)

Principal Architect at Microsoft


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