A podcast is a digital audio program or series that is made available on the internet for download or streaming. Typically, podcasts are available for free, and listeners can subscribe to them using podcast software or applications. Podcasts cover a wide range of topics, including news, comedy, education, and entertainment, and can be produced by individuals, organizations, or businesses. The format allows for on-demand listening, which means that listeners can choose when and where to listen to their favorite podcasts, making it a popular medium for people to consume content.