Differences in the main areas of programming?

Question

IT education

I choose a direction (to SPbPU), but it’s hard to immediately figure out what the main differences are. The maximum that they have about this on the site is a curriculum, but it does not give me much. What are the specific differences between the following areas? What advice would you give on choosing a destination? If this is required, then I plan to link my career with Android development.
- Informatics and Computer Engineering (09.03.01 ) - Information
Systems and Technologies (09.03.02)
- Applied Informatics (09.03.03) -
Software Engineering (09.03.04)