What's the point of UEFA Nations League?

Related questions

1. How does Euro qualifying work?
2. Who will host 2020 Euro?
3. Where is Euro 2020 hosted?
4. Can you qualify for Euro 2020 from nations League?
5. Where is the Europa League final this year?
6. Will England still play in Euro 2020?
7. Where is the next Olympics 2026?
8. Where will UEFA 2020 be held?
9. Who qualifies for UEFA Nations League?
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Tags

1. #group
2. #equally
3. #national
4. #league
5. #matches
6. #allowing
7. #winners
8. #replaces
9. #ranked
10. #friendlies
11. #competitive
12. #teams
13. #qualify
14. #against
15. #nations
16. #finals
17. #competition