Google indexes audio. The PodcastEpisode builder attaches your MP3 files, transcripts, and guest profiles directly to your web pages, allowing users to discover and play your episodes directly from the search results.
A podcast episode doesn't exist in a vacuum; it is part of a larger show. SPP links your individual episode to the broader series automatically.
Provide the direct Audio URL (the .mp3 file) to enable the "Play" button in Google Search. Pasting the full Transcript allows Google to index the spoken words, dramatically increasing your long-tail SEO traffic.
Provide the overall Series Name and the RSS Feed URL. SPP will generate a partOfSeries node, grouping your episodes together logically in the Knowledge Graph.
Podcasts generate massive E-E-A-T (Experience, Expertise, Authoritativeness, and Trustworthiness) by borrowing the authority of the people speaking.
What is the episode about? Don't just repeat the episode title. Use the Primary Subject panel to select the overarching topic (e.g., "Machine Learning" or "Personal Finance"). SPP maps this to the about property, giving Google exact context for the conversation.