Spotify competes directly with Amazon Music for subscribers and ad dollars — but now Spotify is teaming up with a different division of the ecommerce giant in an effort to amp up programmatic advertising revenue. Amazon Ads and Spotify announced a global strategic partnership that gives advertisers using Amazon DSP programmatic access to Spotify’s streaming audio and video inventory, which as of June reached 696 million monthly users. Plugging Spotify into Amazon’s demand-side platform will allo...