You now have new ways to deploy changes to your organization.
Deployment changes include test options for change sets. Sandbox enhancements include sandbox
auto-activation, improved data security, and a new sandbox copy engine.
Choose Test Options for Change Sets You can now choose which tests to run when deploying or validating an inbound change set in production or sandbox. Test options provide flexibility in how much testing is done to achieve quality and code coverage requirements and can reduce execution time in a deployment.This feature is available in both Lightning Experience and Salesforce Classic.
Improved Deployment Experience During Service Upgrades
If your deployment was running tests during a Salesforce service upgrade, test execution now resumes after the service is restored. Results of already executed tests are preserved and those tests aren’t rerun, saving you time. Previously, test execution was restarted from the beginning. This enhancement applies to file-based deployments started with the Metadata API or a tool, such as the Force.com Migration Tool. This enhancement doesn’t apply to change sets.
Sandbox enhancements include sandbox auto-activation, improved data security, and a new sandbox copy engine.