Adobe Exam AD0-E718 Topic 6 Question 15 Discussion

To ensure zero downtime during the deployment process of Magento 2 on-premises, the Architect should follow two steps:

Run bin/magento setup:upgrade --keep-generated to upgrade database. This will skip the regeneration of static content and code files during the upgrade process, which can take a long time and cause downtime. The static content and code files should be generated separately before or after the upgrade process.

Enable config flag under deployment/blue_green/enabled. This will enable the blue-green deployment strategy, which creates a copy of the current production environment (blue) and deploys the new code to it (green). Then, it switches the traffic from the blue environment to the green environment without any downtime. This option can be enabled by adding a line like deployment/blue_green/enabled: true to the .magento.env.yaml file.