You need to set up a CI/CD pipeline for a multi-cloud environment, and the code repository is on GitHub. What combination of GCP services and tools would be the best fit for setting up this CI/CD pipeline?

*Explanation:* To set up a CI/CD pipeline for a multi-cloud environment with the code repository on GitHub, the best choice is **Cloud Build with GitHub App integration**. It provides a straightforward CI/CD setup for multi-cloud environments, streamlining the development and deployment process. Options like Cloud Build with Spinnaker (more complex and potentially unnecessary), Cloud Functions with GitLab (not a dedicated CI/CD tool), Anthos Config Management with Terraform (focused on configuration management), Cloud Composer with Apache Airflow (more suitable for workflow orchestration), and Cloud Run with GitOps (lacks the completeness of a CI/CD pipeline) are less suitable for this specific scenario.