user authentication and app authentication

[AllenSong]

We are going to switch to ArcGIS Server, I am quite not clear about the difference about  user authentication and app authentication, and they apply to/works   for web resources we deliver to users? Thanks.

[DerekLaw]

Hi Allen,

Your question is a little vague. What exactly do you mean when you say you're switching to ArcGIS Server?

To learn more about ArcGIS Server security, I would start with these 2 resources:

• How ArcGIS Server security works—Documentation (10.3 and 10.3.1) | ArcGIS for Server
• ArcGIS Server and Portal for ArcGIS: An Introduction to Security | Esri Video

Hope this helps,