Podcasting involves creating audio files called "shows" that listeners can subscribe to and download on demand or at their convenience. It grew out of RSS feeds and podcasting software that allowed people to easily distribute and listen to audio content. Podcasting provides an alternative way for people and businesses to share content that listeners can enjoy while multitasking. The document discusses the basics of producing and distributing podcasts, including recommended equipment, file formatting, hosting options, and ways businesses are using podcasts.