outer chain
A chain is a link that is imported from another website to its own site. Importing links is a very important process for site optimization. The quality of the imported link (that is, the weight of the page on which the link is imported) directly determines the weight of our site in the search engine. Outside the chain is the blood of the Internet, is a link of a. Without links, information is isolated, and the result is that we can't see anything. Within a Web site, many Web pages need to be concatenated together to form a complete information site. This is because a Web page is not able to carry all the information, so it needs to be divided into a home page and each page, on the other hand, a site is difficult to do everything, so need to link to other sites, the other sites can add information to absorb, the chain is not in the quantity, but the quality of the outgoing chain. The effect of the chain is not just for website SEO to improve the weight of the site, and not only to improve the ranking of a keyword. A high-quality external link is able to bring good traffic to the website.
Inner chain
Within the chain, as the name implies in the same site under the domain name of the content of the link between the page (the content of their own site linked to the internal page of their website, also known as the site link). Reasonable links within the site structure, can improve the search engine and website weight. Relative to external links, internal links are also important. You can directly in your own station deployment, unlike external links are not controllable, need long-term accumulation to achieve a stable SEO effect. Help to improve the search engine crawling index efficiency, conducive to the collection of sites. A page to be included, the first to be able to be crawled by the search engine spiders, spiders crawling track is a link to another link, want to make search engine spiders better crawling, generally need to be guided through the reverse link, but the inside page crawling needs good internal links, if not pay attention to the formation of dead chain broken chain, Spiders can not climb up, there is no good included.
SEO definition of chain inside chain
