One of the great features of developing with ArcGIS Runtime is that you can download it and start developing as soon as you create a developer account. Of course, you will also see this watermark on your map until it is licensed:
You will also see a debug message in the Output window of Visual Studio. To have these messages removed from your app, you need to license it so that it meets Esri's license agreement terms. Let's discuss what kind of licensing options we have first, however. You have three licensing options:
Developer
Basic
Standard
You can develop and test using a Developer license at no cost. This is the kind of license you have once you download the SDK. A Developer license is not for deployment. A Basic license won't cost you anything, except that it has limited functionality. You can deploy with a Basic license. The Standard version of ArcGIS Runtime has a cost associated with it and it exposes all of the functionality of the API. You can also deploy with a Standard...