Which feature do we prefer for deployment using DPs on SCCM?

Hi everyone, I have a question, hope you help me to understand it

1. Explanation of what the difference is from the perspective of network bandwidth control between "Packages" and "Applications" features.

2. Which is the best choice for DP when deploying apps on SCCM"
Because we set BITS policy by GPO for all Windows devices and almost all offices have
Thank you so much