Simply put: let others find your website through Baidu, Google, 360 and other search engines.

You have a website, how to let others know your website, how to search your website through Baidu, and how to make your website visible on the first page of Baidu, which requires optimizing the website ranking.

For example, learning to be a website forum mainly focuses on website production training, and the target customers of the forum are netizens who want to learn to be a website.

So for those who want to learn to do websites, they don't know the existence of learning to do website forums, nor do they know the address of learning to do website forums. They will search Baidu for words such as "how to make a website", "learn to make a website", "how to build a website", "how to make a website by yourself" and "what courses to learn from a zero-based website".