Dynamic insertion vs baked-in
TAKEOliver Wakefield-Smith · Digital SignetSources checked July 31, 2026
What is dynamic ad insertion in podcasts?
| Axis | Dynamic (DAI) | Baked-in |
|---|---|---|
| Where the ad lives | Served into the episode at download time | Recorded into the episode file permanently |
| Campaign control | Swap creative, geo-target, stop anytime | Fixed once published; no changes, no stopping |
| Back catalog | Your ad vanishes when the campaign ends | Your ad plays as long as the episode is downloaded |
| Billing basis | Served impressions during your flight | Usually a flat fee or spot rate for the placement |
| Typical seller | Platforms, marketplaces, networks (the default today) | Creator-direct deals, smaller shows |
Why the industry went dynamic
DAI turned podcast episodes from fixed print runs into ad servers: sellers monetize back catalog with current campaigns, buyers get flighting and geo control, and measurement counts served impressions under IAB’s podcast measurement guidelines rather than estimating from episode downloads. The pricing consequence: dynamic inventory trades close to media-market logic (the published CPM structures), while baked-in placements price like sponsorships: flat, negotiated, per deal.
The baked-in case, still
A baked-in host-read in a beloved show’s episode compounds: every future back-catalog listener hears it, at no additional cost to you. Creator-direct deals on Podcorn often ship baked-in, which is part of why flat fees there should be judged on expected lifetime downloads, not first-month numbers. The trade is control: a baked-in mistake (dead URL, expired offer) is permanent. Use evergreen codes and URLs in baked-in placements, never dated promotions.
Can you choose?
On platforms and marketplaces, mostly no: Acast is DAI-native, Spotify serves dynamically, and Libsyn Ads host-reads run through dynamic infrastructure. Creator-direct is where baked-in still lives as a choice. Ask; the answer changes what your billing means and how long your money works.
Format choice: host-read vs programmatic · Frequency: how many spots