Acast

Acast is a Swedish-founded podcast technology and advertising company serving podcast creators, publishers, advertisers, media agencies, and listeners. Its business combines podcast hosting and distribution with tools for monetising audio content through advertising. Rather than operating only as a listening application, Acast provides infrastructure that enables podcasts to be published across listening services, managed by their owners, and connected with commercial demand from brands. The company was founded by Karl Rosander and Måns Ulvestam, with Johan Billgren also identified as a co-founder. The business launched in 2014 after being established in Sweden and developed around the idea that podcasting could support an open distribution model. Podcasts hosted by Acast are intended to remain available through multiple listening applications rather than being restricted to a single proprietary player. This platform-independent approach has been a recurring part of Acast’s identity. A central part of Acast’s technology is dynamic advertising insertion. The system allows advertisements to be placed into podcast episodes and targeted according to factors such as geography, timing, and audience characteristics. This enables publishers and creators to update advertising inventory after an episode has been released and gives advertisers a way to purchase podcast audiences across shows, markets, and formats. Acast’s marketplace model connects podcast advertising supply with the requirements of brands and agencies, while its publisher tools support distribution, measurement, and revenue generation. Acast’s network has included independent programmes as well as podcasts from major publishers. Examples associated with the platform include The Adam Buxton Podcast, My Dad Wrote A Porno, The Football Ramble, The Magnus Archives, Toni and Ryan, The Guardian, The Economist, The Athletic, The Times, and the Financial Times. The company has also operated or acquired services intended to broaden the podcast ecosystem, including the hosting platform Pippa, the podcast discovery and listening service RadioPublic, and the podcast database Podchaser. Acast expanded through external investment and acquisitions during the late 2010s and early 2020s. It introduced a paid subscription product, Acast+, in 2016, added a free hosting tier in 2019, and acquired Pippa in the same year. In 2021 it announced the acquisition of RadioPublic and became a publicly traded company on Nasdaq First North Premier Growth Market in Stockholm. In 2022 it announced the discontinuation of its podcast client application, citing the reduced strategic importance of owning a listening app and its preference for an independent distribution ecosystem. It subsequently acquired Podchaser and entered an advertising partnership with Amazon Music. The company’s current positioning sits at the intersection of podcast infrastructure, digital publishing, advertising technology, and creative media services. Acast operates internationally, with a physical presence in multiple countries, while maintaining its headquarters in Stockholm. Its principal proposition is to help creators and publishers reach audiences across open podcast channels and to make that reach commercially valuable through advertising, subscriptions, analytics, and related services.

Acast was established in Sweden in 2013 by Karl Rosander and Måns Ulvestam, with Johan Billgren also associated with the founding team. The service launched in 2014 with a focus on podcast hosting, distribution, and advertising-based monetisation. Early recognition included being named Start-up of the Year by IDG magazine and Internetworld, as well as receiving a Most Innovative Media Service award at Sweden’s Mobilgalan during its first year of operation. The company’s early development was supported by strategic and financial investors. In 2015, Acast completed a Series A financing round led by Bonnier Growth Media and received additional investment from venture capital firm MOOR. In 2016, it expanded beyond advertising-led services by launching Acast+, a paid subscription product for podcast content. Acast later introduced a free hosting tier, making its infrastructure available to a broader range of podcast creators. Acast continued to raise capital as podcast advertising became a more established part of digital media. In December 2018, it raised a reported $35 million from AP1 and Swedbank Robur funds, bringing reported cumulative funding above $67 million. In 2019, the European Investment Bank invested €25 million in the company. That year Acast also acquired Pippa, another podcast hosting platform, strengthening its position in creator and publisher infrastructure. The company’s expansion became increasingly international during the early 2020s. In early 2021, Acast announced the acquisition of RadioPublic, a Boston-based podcast service founded by PRX. Acast also moved into the public markets in June 2021, listing on Nasdaq First North Premier Growth Market in Stockholm at a reported valuation of approximately SEK 7 billion. The founders Karl Rosander and Måns Ulvestam sold their remaining Acast shares earlier in 2021 in connection with funding their subsequent venture, Sesamy. In March 2022, Acast announced that it would discontinue its podcast client application. The company said that owning a listening app had become less important as a source of user data and that it preferred to support an open, platform-independent podcast ecosystem. Later in 2022, Acast agreed to acquire Podchaser for a reported $27 million. Podchaser provided a platform-agnostic database of podcasts and user reviews, adding discovery and metadata capabilities to Acast’s broader technology offering. Acast was also ranked second in Podtrac’s US podcast advertising-sales-network ranking in August 2022. Acast entered a partnership with Amazon in November 2022 under which Amazon Music purchased advertising space across thousands of Acast podcasts. The arrangement allowed Amazon Music customers to listen to participating programmes without advertisements while giving Acast publishers access to a large commercial buyer of podcast inventory. In 2024, RadioPublic announced the permanent closure of its app. After the closure, RadioPublic programme links redirected to corresponding shows on Podchaser. In December 2024, Acast acquired creative production house Wonder Media Network, broadening its activities beyond hosting and advertising infrastructure into content production. A later announcement in December 2025 described Acast’s acquisition of Wake Word Studios, a Munich- and Berlin-based audio and video studio and podcast producer. The transaction was described as expanding Acast’s German operations, with Wake Word Studios becoming Acast Creative Studios and its Podius planning platform continuing independently. Across its development, Acast has maintained an emphasis on open podcast distribution. Its technology supports dynamic ad insertion, allowing advertising to be selected and inserted according to factors such as location, time, and audience information. This approach enables creators and publishers to update advertising inventory and gives advertisers access to targeted podcast campaigns across multiple shows and markets. Acast therefore operates as a combination of hosting provider, podcast network, advertising marketplace, publisher technology supplier, and creative media company.

1. 2025Wake Word Studios acquisition announced

   Acast announces the acquisition of Wake Word Studios and its podcast catalogue, with the business becoming Acast Creative Studios and Podius continuing independently.

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2. 2024RadioPublic app closes

   RadioPublic announces the permanent closure of its app, with programme links later redirecting to Podchaser.

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3. 2024Wonder Media Network acquisition

   Acast acquires creative production house Wonder Media Network.

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4. 2022Podcast client app discontinued

   Acast announces the discontinuation of its podcast client app in favour of a more platform-independent distribution strategy.

   Source
5. 2022Podchaser acquisition announced

   Acast agrees to acquire Podchaser, a podcast database and review platform, for a reported $27 million.

   Source
6. 2022Amazon Music advertising partnership

   Acast enters an agreement under which Amazon Music purchases advertising inventory across thousands of Acast podcasts.

   Source
7. 2021RadioPublic acquisition announced

   Acast announces the acquisition of RadioPublic, a Boston-based podcast service founded by PRX.

   Source
8. 2021Nasdaq Stockholm listing

   Acast lists on Nasdaq First North Premier Growth Market in Stockholm at a reported valuation of approximately SEK 7 billion.

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9. 2019Pippa acquisition and free hosting

   Acast acquires podcast hosting platform Pippa and begins offering a free podcast hosting tier.

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10. 2019European Investment Bank investment

    The European Investment Bank invests a reported €25 million in Acast.

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11. 2018Series C financing

    Acast raises a reported $35 million from AP1 and Swedbank Robur funds, taking reported total funding above $67 million.

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12. 2016Acast+ launches

    Acast introduces Acast+, a paid subscription service for podcast content.

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13. 2015Series A financing

    Acast closes a reported $5 million Series A round led by Bonnier Growth Media, with additional follow-on investment from MOOR.

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14. 2014Podcast service launches

    Acast launches its podcast hosting, distribution, and advertising monetisation service.

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15. 2014Early industry recognition

    Acast receives Swedish startup and media innovation recognition during its first year after launch.

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16. 2013Acast is founded

    Acast is established in Sweden by Karl Rosander and Måns Ulvestam, with Johan Billgren also identified as a co-founder.

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An international, platform-independent podcast technology and monetisation company connecting creators and publishers with audiences, advertisers, and media agencies.

• Acast podcast hosting and distribution platformPodcast hosting and distribution2014

  Acast’s core infrastructure allows creators and publishers to upload, manage, publish, and distribute podcast programmes across multiple listening applications. The service is designed around an open ecosystem rather than requiring audiences to use a proprietary Acast player. Hosting is connected to publishing, audience reach, and commercialisation tools, allowing podcast owners to manage content while making episodes available to external platforms and advertising markets.

• Acast MarketplacePodcast advertising

  Acast Marketplace connects podcast advertising inventory with advertisers and media agencies. It supports campaigns across shows and geographic markets, using Acast’s advertising technology to help define audiences, place messages, and commercialise podcast listening. The marketplace is central to Acast’s role as an intermediary between publishers seeking revenue and brands seeking targeted access to podcast audiences.

• Dynamic ad insertionAdvertising technology

  Acast’s dynamic insertion technology enables advertisements to be selected and inserted into podcast episodes according to campaign and audience parameters. The approach can use information such as location, timing, and personal or audience data, allowing advertising to be refreshed after publication and targeted to defined listener groups. It helps separate the durable podcast content from changeable commercial inventory.

• Acast+Podcast subscriptions2016

  Acast+ was a paid subscription service introduced in 2016. It represented an expansion beyond advertising-only monetisation by giving podcast publishers a mechanism for offering paid content or subscriber benefits. Available details in the supplied reference material do not establish the product’s current operating scope.

• PippaPodcast hosting

  Pippa was a podcast hosting platform acquired by Acast in 2019. Its addition strengthened Acast’s creator-facing hosting and publishing capabilities and contributed to the company’s broader infrastructure offering for podcast producers.

• RadioPublicPodcast discovery and listening

  RadioPublic was a Boston-based podcast service founded by PRX and acquired by Acast in 2021. It operated as a podcast discovery and listening product. RadioPublic later announced that its application would close permanently in March 2024, after which programme links redirected users to corresponding shows on Podchaser.

• PodchaserPodcast database and discovery

  Podchaser is a platform-agnostic podcast database featuring programme information and user reviews. Acast agreed to acquire it in 2022, adding structured podcast discovery, metadata, and community review functionality to its hosting, distribution, and advertising activities.

• Acast Creative StudiosCreative audio and video production2025

  Acast Creative Studios is the name assigned to Wake Word Studios following the announced acquisition described in 2025. The Munich- and Berlin-based operation produces audio and video, including podcasts, and expands Acast’s presence in German creative media services. The associated Podius media-planning platform was described as continuing independently.

• 2022Amazon Music advertising partnership

  International

  Acast partnered with Amazon Music in an arrangement covering advertising inventory across thousands of Acast podcasts. Amazon Music purchased the advertising space, and customers using the relevant Amazon service could listen to participating shows without advertisements.

  Outcome. Expanded Acast’s access to a major advertising buyer and created an ad-free listening proposition for participating Amazon Music customers.

  Source

• 2022Discontinuation of the Acast podcast client appStrategy

  Acast concluded that its own listening application had become less important as a source of user data and that its strategic emphasis should remain on an open podcast ecosystem.

  What changed. The company announced that it would discontinue its podcast client application and rely on distribution through independent listening platforms.

  Aftermath. The decision reinforced Acast’s platform-independent positioning and reduced its direct role as a consumer listening-app operator.

  Source
• 2022Agreement to acquire PodchaserM&A

  Acast pursued additional podcast discovery, metadata, and review capabilities to complement its publishing and advertising infrastructure.

  What changed. Acast agreed to acquire Podchaser, a platform-agnostic podcast database with user reviews.

  Aftermath. Podchaser added discovery and structured podcast information to Acast’s wider technology and media ecosystem.

  Reported acquisition price. $27 million (2022)

  Source
• 2016Launch of Acast+Product launch

  Acast sought to complement advertising-based podcast monetisation with a paid subscription model.

  What changed. The company launched Acast+, a paid podcast subscription service.

  Aftermath. The launch broadened Acast’s stated monetisation model beyond advertising, although the supplied sources do not establish the product’s later scale or current availability.

  Source

• 2025Acast acquires Wake Word Studios

  Acast announced the acquisition of Munich- and Berlin-based creative audio and video studio and podcast producer Wake Word Studios. Following completion, the business was described as becoming Acast Creative Studios, while its Podius media-planning platform continued to operate independently.

  M&A
  Source
• 2024RadioPublic announces closure of its app

  RadioPublic announced that its app would permanently close at the end of March, with show links subsequently directing users to corresponding programmes on Podchaser.

  Other
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• 2024Acast acquires Wonder Media Network

  Acast acquired creative production company Wonder Media Network, expanding its creative production capabilities.

  M&A
  Source
• 2022Acast discontinues its podcast client application

  Acast announced that it would stop operating its podcast client app, citing the declining strategic value of owning a listening application and its preference for platform-independent distribution.

  Other
  Source
• 2022Acast agrees to acquire Podchaser

  Acast announced an agreement to acquire Podchaser, a podcast database and discovery platform featuring user reviews.

  M&A
  Source
• 2022Acast enters advertising partnership with Amazon Music

  Under the agreement, Amazon Music purchased advertising inventory across thousands of Acast podcasts, enabling Amazon customers to hear participating shows without advertisements.

  CampaignOther
  Source
• 2021Acast announces acquisition of RadioPublic

  Acast announced the acquisition of Boston-based podcast service RadioPublic, founded by public-radio organisation PRX.

  M&A
  Source
• 2021Acast lists on Nasdaq Stockholm

  Acast became a publicly traded company on Nasdaq First North Premier Growth Market in Stockholm.

  Other
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• 2019Acast acquires podcast hosting platform Pippa

  Acast acquired Pippa, expanding its podcast hosting capabilities.

  M&A
  Source
• 2016Acast launches a paid podcast subscription service

  Acast introduced Acast+, a paid subscription offering for podcast content.

  Product launch
  Source

1. Acast