Microsoft’s answer to Google Ads, Bing Ads is where you can run search ads on the Bing search engine.
As Bing is a much smaller search engine than Google, the reach of Bing Ads is much smaller than Google Ads. However, as Bing Ads is less used than Google Ads they are also cheaper.
As of April 2019, Bing Ads is called Microsoft Advertising, it can be accessed here.
Before being called Bing Ads, it was called Microsoft adCenter and before that, it was called MSN adCenter.Glossary Index