Andrew Chang developed secure, configurable access to private Google Cloud Storage blobs for the ankane/iceberg-go repository. He implemented authenticated HTTP client support using Go and Google Cloud client libraries, introducing a configuration flag that allows the system to prefer authenticated credentials while falling back to anonymous access when necessary. To ensure reliability, Andrew expanded integration testing with a dedicated suite that verifies authenticated access and resilience under different scenarios. His work focused on cloud storage and integration testing, delivering a robust solution that balances security and flexibility for GCS access. The changes reflect thoughtful engineering and thorough validation of new functionality.