The Collaborative International Dictionary of English v.0.48:

Hosting \Host"ing\, n. [From Host an army.] [Obs.]
   1. An encounter; a battle. "Fierce hosting." --Milton.
      [1913 Webster]

   2. A muster or review. --Spenser.
      [1913 Webster]

The Free On-line Dictionary of Computing (30 December 2018):

web hosting
hosting

    Running web servers for other
   businesses or individuals, usually as a commercial venture.
   Basic web hosting would allow customers to upload own web
   site content - HTML pages, images, video - typically
   via FTP, to a shared web server which other people can
   access via the Internet.

   A web hosting (http://webhostingsearch.com/) businesses may
   provide any or all of the functions required by a website
   including: networking, HTTP server software, content storage,
   content management, running customer or off-the-shelf CGI
   programs, ASP scripts or other server extentions, load
   balancing, streaming content, domain name registration,
   DNS serving, electronic mail storage and forwarding,
   database, shell account, content design and creation,
   search engine optimisation, web log analysis and web
   applications such as on-line shopping with financial
   transaction processing.

   (2011-12-24)