| demographics | Subsets of a population, such as gender, age, location, and so on. Many advertising platforms allow the specific targeting of certain demographics. |
| soft 404 | When a non-existent page (a page that has been deleted/removed) displays a ?page not found message or page to anyone trying to access it, but fails to return a HTTP 404 status code. In other words, the content of a web page displayed is entirely unrelated to the HTTP response returned by the server. |
| google mobile first indexing | 2017 will see Google experiment with preferring mobile versions of websites when it comes to indexing and ranking. Thus a poorly configured mobile site might negatively impact your search engine standing. |
| manual actions | Penalties that Google imposes on websites engaging in practices it does not condone. |
| aspx | Microsoft Active Server Page Framework |
