I believe anyone who manages SEO for the global website knows about what Hreflang can do, if not already using it. It’s a simple and very effective tag to manage, but many people have problems with it. Usually, the problems are created by un-organized website structures and also human errors. I wrote an article about the hidden challenges I’ve seen with many websites in here.

I also see many people don’t try to understand the solutions recommended by the search engines or other SEOs. They just look for answers. They just want to copy and paste the examples, and hope it to work. If you do that, the knowledge won’t stick with you, and you won’t be able to apply it to another case. I believe that you need to be curious and willing to deep dive to solve problems in order to become a good technical SEO.