What is necessary to publish changes made in a Dynamics 365 application?

To publish changes made in a Dynamics 365 application, it is necessary to build and deploy the solution package. This process ensures that the modifications made to the application's components, such as forms, views, workflows, and custom entities, are properly integrated into the Dynamics 365 environment.

Building the solution package compiles the changes into a deployable format, while deploying the package actually applies those changes to the application. This step is crucial because it allows the platform to recognize and implement the newly modified or created configurations. Once the deployment process is complete, users can see and interact with the updates within the application.

The other options provided do not directly contribute to the publishing process. Documentation, while important for tracking changes and guiding users, does not affect the actual deployment of changes within the application. Restarting the application server is not typically required to publish changes in Dynamics 365, as the platform supports live updates without necessitating downtime. Notifying users is essential for communication purposes but does not influence the technical aspect of publishing or deploying changes.