After securing many big deals to help it sell a wide array of programmatic ads against top video, Amazon is now working to do the same with audio.

Amazon unveiled an alliance Tuesday with SiriusXM Media that allows advertisers using the online giant’s demand-side platform to buy up programmatic advertising inventory from the audio player, the latest in a series of similar alliances media companies have been striking in recent months. Amazon unveiled a similar agreement with Netflix last week and with Disney in June . Amazon’s DSP will let marketers reach listeners who listen to SiriusXM’s portfolio of streaming music channels, and plans to expand that to SiriusXM’s array of podcasts.

“By combining Amazon’s diverse audiences and first-party insights with SiriusXM’s premium audio co

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