Organizations plan and hold these meetings with targeted audiences, and provide them with relevant information.
Seminars are usually shorter events, lasting a couple hours, ½ day, or even a whole workday. They have single or multiple speakers and generally keep all participants together in the same space. They are typically held at hotels, begin with a keynote session and then hold breakout sessions by topic. A conference is usually planned for at least half of a day though generally conferences span the course of one to two days or sometimes longer.