| domain strength | The strength of the domain that relies on the amount of keywords for which the domain is positioned within the top results and the average position for them. |
| manual review | A website review done by a search engine engineer to determine whether a site is legitimate. Most search engines utilize a combination of manual and automated processes. |
| api key | An API Key is a unique value assigned to a user of that particular service. It acts as an identifier to let the software know if access should or should not be granted to the tool. |
| navigational links | Noun phrase. The (usually uniformly used) internal links a Web site uses to provide visitors with clear pathways between pages. |
| mobile-first indexing | Google began progressively moving websites over to mobile first indexing in 2018. This change means that Google crawls and indexes your pages based on their mobile version rather than their desktop version. |