Podcasts

Google can expose podcasts to users through many different mechanisms, including:

• Google Search results as a link to a podcast page or as an embedded episode player
• Google Search App for Android (requires v6.5 or higher of the Google Search App)
• Google Podcasts app
• Google Home
• Content Action for the Google Assistant
• Android Auto

Google simply needs to find and index your podcast in order to make it available. See here to learn how to make your podcast available on Google.