TL;DR
The Bing bot is the Bing search engine's crawler, and its purpose is to search the web for HTML files to record them in the Bing index and to rank them.
What is Bingbot?
Bing is a search engine owned by Microsoft and Bingbot is their standard crawler that handles most of the sites' crawling on a daily basis, for both desktop and mobile web!
Bing operates five main crawlers:
- Bingbot. The standard crawler in charge of crawling and indexing sites
- MSNBot. This bot used to be the standard crawler before Bingbot, but it still handles some of the crawling duties.
- MSNBot-Media The crawler that handles images and videos across the Bing search engine's crawled sites.
- AdIdxBot. Represents the crawler used by Bing Ads to crawl the ads and follow through to websites linked from those ads for quality control purposes.
- BingPreview. Stands for the name of the crawler used to generate page snapshots.