Six years after buying podcast ad server Megaphone for $235 million, Spotify has fully absorbed it into the Spotify Ad Server, folding publishers who relied on it into a single walled garden. For advertisers, it is a reminder that the infrastructure underneath podcast media is not neutral and can change owners.
The tool a lot of podcast publishers built on just became part of Spotify's house.
Six years after buying podcast ad server Megaphone for $235 million, Spotify has finished absorbing it. The product is now fully folded into the Spotify Ad Server, completing a consolidation that quietly reshapes how podcast advertising gets bought and sold.
The changes are technical but they matter to publishers. Megaphone's audience targeting used to run on Nielsen data. Its 'Promotions' ads, which sat at the bottom of Spotify's ad auction waterfall, are being force-migrated into the Spotify Ad Server. Publishers who hosted and monetised with Megaphone as a standalone tool are now inside Spotify's own stack, on Spotify's terms.
That is the pattern worth noticing. A platform buys the infrastructure the open market relied on, runs it separately for years, then pulls it fully in-house. What looked like an independent tool becomes part of a walled garden.
Why it matters
Podcasting is a real growth channel for Australian advertisers, and audio is one of the few formats an AI summary cannot intercept. But consolidation like this narrows the field. When one platform controls hosting, ad serving and the auction, publishers have less leverage and advertisers have fewer independent places to buy. For anyone spending on podcasts, it is a reminder that the infrastructure underneath your media is not neutral, and it can change owners.
Spotify bought Megaphone for $235 million in 2020 and has now fully absorbed it into its own ad server. Source: AdExchanger.
What to do about it
Know whose stack you are buying on. When one company owns the hosting, the ad server and the auction, understand what that means for pricing and data.
Keep a direct relationship with publishers. Buying podcast inventory direct gives you leverage a single platform will not.
Do not put all your audio in one basket. Spread across networks and hosts so a single consolidation does not decide your whole strategy.
Watch the data trail. When targeting moves from Nielsen to a platform's own system, ask what you can still measure independently.
Audio is a channel worth backing, and the platforms know it. The advertisers who understand who owns the pipes will keep their options open as the walls go up.