Django: Is the app an independent building block of the site?

Question

Django

Started taking a course on Django. The author leads it mainly in the "repeat after me" style - there are few comments and some systemic explanations. There was an impression that the application is such an independent element of the site. I put certain functionality in it, and I can easily transfer it from site to site (the same blog or gallery, for example), for this it is enough to:
- perform migrations,
- have my own templates folder in the application with templates that inherit the site template,
- have the application has its own urls, which will be included in the site urls.
Is it so? Or am I missing/misunderstanding something?

Answer 1

Yes so.