During April 2026, Dmitry Kostyrev developed a targeted feature for the moby/buildkit repository, focusing on backend development and API integration using Go and the AWS SDK. He introduced an S3 Accept-Encoding configuration flag that allows users to control Accept-Encoding behavior in S3 cache requests, addressing compatibility issues with S3-compatible backends such as Google Cloud Storage. This change improved cross-cloud interoperability and cache reliability by reducing encoding-related integration problems. Dmitry maintained high code quality and governance by delivering the feature as a signed-off commit, ensuring traceability and supporting rapid rollback if necessary. No bugs were fixed during this period.