What are external connections, and how do they work?
External links are links that lead to (target) a domain other than the one where the link is located (source). In layman’s terms, an external link to your site is when another website links to you. In the same way, if you connect to another website, it’s termed an external link.

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Use descriptive keywords in anchor text that relate to the same topic or keywords as the destination page. It’s not required to utilise the same keyword phrase each time; in fact, doing so may cause spam detectors to alert. Rather, aim for a diversity of anchor text that improves context and usability for your users—as well as for search engines.
A link to an external domain is referred to as an external link.
External links, according to top SEOs, are the most essential source of ranking power.
Because search engines regard external links to be third-party votes, they transfer link equity (ranking power) differently than internal links.
The “title” link property, according to top SEOs, isn’t used for ranking purposes.
According to statistics from a search engine ranking factor survey, obtaining external links is the single most essential goal for achieving high ranks.
External links are one of the most difficult metrics to manipulate, and hence one of the greatest ways for search engines to evaluate the popularity of a specific web page. This concept was pioneered by Alta Vista, an early search engine, and then refined by Google.
Google made its impact by bringing PageRank to the Stanford community (an algorithm developed by Google co-founder Larry Page). This algorithm used hyperlinks as popularity votes. The most popular pages were those that have the most links pointing at them.
The most popular and relevant pages would appear first in Google’s results when they were considered relevant for a certain query. Despite the fact that today’s algorithm is considerably more complicated, it is nevertheless likely to contain the concept of external connections as votes.
External link value is now determined by a variety of measures by the main search engines. These are some of the metrics:
The connecting domain’s credibility. The linked page’s popularity. The content on the source page and the destination page is relevant. The text used in the link’s anchor. The number of links on the source page that go to the same page. The total number of root domains linking to the destination page.
The amount of different versions of anchor text utilised in links to the target page. The connection between the source and destination domains in terms of ownership.

External links are both a more stable statistic and an easier metric to monitor, whereas traffic is a “messy” number that is difficult for search engines to assess correctly (according to Yahoo! search developers). This is due to the fact that traffic statistics are buried in private server logs, whereas external links are publicly available and easy to preserve. External links are a fantastic statistic for measuring the popularity of a web page for these and other reasons.
Links offer search engines with extremely significant relevance signals. Humans (who can read web sites better than machines) generally write the anchor text for links, and it is usually very reflective of the content of the page being linked to. The URL of the target page (e.g., site referenced in a link) or a brief phrase (e.g., “top aircraft article”) are often used as relevance measures by search engines. Links usually lead to information that is relevant. This aids search engines in establishing Internet knowledge hubs, which they may subsequently use to authenticate the relevance of a specific online content.
Internal linking is when a site links to other URLs on the same site, but external linking is when a site links to URLs on another site. Internal links, on the other hand, refer to sites on your own domain, whilst external links point to pages on other domains.
External equity links are ones that transmit SEO signals like PageRank and anchor text to Google, which it utilises to rank pages. These are usually links that don’t have the “nofollow” tag. Because nofollow links are now seen as hints by Google, nearly any external link might possibly pass equity.