Applications
An application is a containerised business application that the Communication Operator rolls out to a deployment site from a Helm chart (for example a web app that belongs to a blueprint).
Open it with Integration > Applications.
The list has the columns Name, Chart, Version, Hostname, Deployment and Actions. The toolbar has New application and Import. Without applications the page says "No applications yet".
An application is hosted by one deployment site; the counts of applications appear in the Overview and on the details of the deployment site.
For the deployment mechanics see Deployment Sites in the Technology Guide.