Where can an environment variable like Org_URL be created?

Creating an environment variable like Org_URL is primarily done in the pipeline. This is because pipelines are designed to encapsulate the steps and stages of a deployment process, allowing for customization and configuration based on the specific needs of the deployment environment. By defining variables within the pipeline, users can specify different settings or parameters that may change depending on where the pipeline is executed (like different Salesforce orgs or configurations), ensuring that the deployment process remains smooth and adaptable.

This approach allows for easier management of environment-specific values, as variables can be reused across different jobs and stages without needing to hard-code them into the deployment scripts. Furthermore, defining environment variables in the pipeline facilitates better security practices, as sensitive information can be isolated from source control and managed within the pipeline settings instead.