About website SEO indexing techniques

There are three types of Baidu inclusions. What are they?

1. Direct browsing, external links, search links.

So what is direct connection? Direct connection is about direct connection to the website domain name.

So what are external links? External links refer to article content links and third-party Baidu included links.

So what are search links? Search links refer to the search links of website crawler technology. So what are the website crawlers?

There are Baidu search, Google, 360, Sogou search, and other web crawlers.