Salesforce CLI with Salesforce DX is a tool or mechanism that can be used to manage the source-driven deployment process. Salesforce CLI is a command-line interface that can be used to create, manage, and deploy Salesforce projects and orgs. Salesforce DX is a set of tools and features that can be used to enable source-driven development, team collaboration, and agile delivery on the Lightning Platform. By using Salesforce CLI with Salesforce DX, the developer can create and use scratch orgs, which are temporary and disposable orgs that can be used for development and testing. The developer can also use version control systems, such as Git, to track and manage the changes in the source code. The developer can also use scripts, commands, and metadata to automate the deployment of the changes to different environments, such as sandbox and production. Salesforce CLI with Salesforce DX can also integrate with other CI/CD tools and services, such as Jenkins, GitLab, or Heroku. Reference: [Salesforce CLI], [Salesforce DX]