Embodiments of the present invention provide a holistic and secure resource provisioning gateway system. In particular, a managing system receives resources from disparate sources like production environments. The resources are divided into multiple resource blocks and each resource block is transmitted to individual servers of a resource gateway network along with packaged code that is configured to cause the individual servers to identify sensitive resource elements and sanitize the sensitive resource elements. A request for a provisioned set of sanitized resources meeting certain application testing requirements is then received, and the set of sanitized resources are generated based on the requirements and transmitted to a testing environment.