How is technical writing different than business writing?
Technical writing deals with science, engineering and technology. Typical documents include specifications, manuals, data sheets, research papers, field reports and release notes.
Business writing is just about any other kind of writing people do at work, except journalism and creative writing. It includes reports, emails, proposals, white papers, minutes, business cases, letters, copywriting, bids and tenders.
However, there is some crossover. Many reports, bids and proposals contain technical data and specifications. So, business writers may find themselves editing technical content, and technical writers may be called upon to write persuasive documents for a non-technical audience.