During July 2025, this developer delivered an extensible subnet filtering API for cloud providers within the gomorpheus/morpheus-plugin-core repository. The work focused on API design and plugin development using Java, introducing the CloudProvider.filterSubnets method as a stub to support custom subnet filtering during provisioning. By implementing a default no-operation behavior that returns the original subnet collection, the solution preserved existing provisioning flows while establishing a safe extension point for future enhancements. Comprehensive documentation clarified API availability and versioning, supporting upgrade paths and developer understanding. This foundation enables business-specific subnet filtering logic without disrupting current deployments or workflows.