Providing temporary use of online, non-downloadable software for building, deploying, and managing software applications using agent-based development tools; providing temporary use of online, non-downloadable software for creating, managing, and running containerized software applications in isolated sandbox environments; providing temporary use of online, non-downloadable software for running software workloads in network-isolated and filesystem-isolated computing environments; providing temporary use of online, non-downloadable software featuring cloud-based sandbox environments for developing, testing, and deploying software code and software artifacts; providing temporary use of online, non-downloadable software for governance and policy management of sandboxed software development environments; providing temporary use of online, non-downloadable software for container orchestration and container-as-a-service computing; providing temporary use of online, non-downloadable software for building and running custom container images; providing temporary use of online, non-downloadable software for automated network configuration and connectivity management in containerized computing environments; providing temporary use of online, non-downloadable software for running machine-learning models in containerized environments; providing temporary use of online, non-downloadable application programming interfaces (APIs) and software development kits (SDKs) for integrating third-party software with cloud-based container development and deployment platforms.