The Apollo platform has announced a new feature called schema validation, which enables teams to practice agile schema development and iteratively evolve their GraphQL API without breaking existing clients. This feature compares proposed schema changes against production API traffic to ensure safety during deployment. The schema validation workflow integrates with CI/CD pipelines and GitHub pull requests, giving teams confidence to make changes while maintaining a lean schema. The feature includes a CLI command, change summary UI, and GitHub status integration, which work together to create a cohesive workflow that ensures compatibility with existing clients.