How important is Hreflang?

Related questions

1. What does a canonical tag do?
2. What are the different types of canonical forms?
3. Why is HREF used?
4. What is lang attribute in HTML?
5. What is Hreflang in HTML?
6. What is rel canonical?
7. What is rel and href?
8. What is self referencing Hreflang?
9. What does canonical URL mean?
10. What is Hreflang?

Tags

1. #country
2. #engine
3. #signal
4. #engines
5. #allows
6. #search
7. #language
8. #specific
9. #hreflang
10. #serve
11. #users
12. #google
13. #attribute
14. #tells
15. #result
16. #important
17. #which
18. #searching
19. #targeting
20. #directive