A deployment share is essentially a folder on the server that is shared and contains all the setup files and scripts needed for the deployment solution. It also holds the configuration files (called rules) that are gathered when a machine is deployed. These configuration files can reach out to other sources, like a database, external script, or web server to get more settings for the deployment. For Lite Touch deployments, it's common to have two deployment shares: one for creating the reference images and one for deployment. For Zero Touch, it's common to have only the deployment share for creating reference images because Configuration Manager deploys the image in the production environment.