As of today, all Alexa users can finally use their Alexa to play podcasts through Spotify, simply by saying “Alexa, play The Upgrade on Spotify.” If you’re partway through an episode on the Spotify app, Alexa will pick up where you left off, and vice versa. No more juggling your progress between the two apps.
Source: LifeHacker – How to Play Spotify Podcasts Through Alexa