Schema Versioning for Public JSON Surfaces

Overview

Additive changes still hurt when parsers are brittle. You will practice tolerant readers, feature flags for field rollout, and JSON Schema diff reviews with consumer representatives in the loop.

What you practice

• Additive field rollout play with staged flags
• JSON Schema diff review checklist
• Mobile-shaped parser tolerance lab
• Deprecation headers and sunset coordination template
• Consumer office hours agenda you can reuse

Outcomes

• Ship a backward-compatible release with written consumer notes
• Run a schema review meeting with a shared diff artifact
• Choose a sunset policy with dates and telemetry gates