Installing an AppSource app is straightforward. It is as easy as searching for it (step 1 to step 3--notice how you can filter by different categories), agreeing on the terms and conditions, then selecting your instance and installing it (step 4 and step 5). The new solution will appear in your instance (step 6 and step 7). No further configuration is required. Although, some more complex apps might require a certain level of configuration before you can start using them efficiently.

Behind the scenes, AppSource uses PackageDeployer (described in Chapter 8, DevOps) to deploy the package--another reason to use PackageDeployer. It deploys the Dynamics 365 solutions, imports the reference data, and executes any custom code required to get the solution up and running.