Shonda Rhimes, the prolific television producer whose body of work includes the durable ABC drama “Grey’s Anatomy,” moved into the streaming world in 2017 when she signed a nine-figure deal to create shows for Netflix. Now, she is taking her talent for storytelling to the audio realm as the executive producer of new podcasts to be made in conjunction with the broadcast giant iHeartMedia.

Ms. Rhimes’s production company, Shondaland, and iHeart announced the partnership, a three-year deal, on Wednesday. Under the arrangement, Ms. Rhimes will produce more than a dozen iHeartRadio original podcasts that will be available on the iHeartPodcast Network. With the deal, Shondaland has also started a new division, Shondaland Audio.

In addition to “Grey’s Anatomy,” a network stalwart since 2005, Ms. Rhimes and Shondaland were behind ABC’s “Scandal” and “How to Get Away With Murder.” For Netflix, Ms. Rhimes has said she plans to make at least eight new shows.

The first to go into production, “Bridgerton,” a high-society soap set in Regency-era London, is based on a popular series of romance novels by Julia Quinn. With a cast that includes Julie Andrews and Regé-Jean Page, it is scheduled to start streaming on Netflix next year.