Best Ad Server Software for Twilio

Kevel (previously Adzerk), gives you the APIs to quickly create your own fully-customized advertising server for sponsored listings, native ads, and internal promotions. This will allow you to take back the Internet and generate more online revenue. Our award-winning platform processes over three billion API requests per day and has helped industry leaders such as Yelp, Ticketmaster and others reduce their build times by more that 90%.

AdButler is an API-first ad server and retail media platform built for teams that need to launch revenue programs fast without hiring an ad-tech army. Serve and measure ads across web, apps, video/CTV (VAST/VPAID), DOOH, and email newsletters from one platform. Our global edge network delivers sub-100ms latency at scale, with precise targeting (geo, device, time, contextual, first-party data), frequency capping, pacing, and creative optimization. Developers get clean REST APIs, SDKs, webhooks, and server-to-server options so you can integrate AdButler into your stack—whether you’re powering a publisher CMS, a marketplace, a SaaS platform, or a retail media network. Business users get a white-label self-serve portal, order and line item management, trafficking tools, and real-time reporting your finance team will actually trust. Use cases we enable: direct-sold campaigns alongside third-party demand; retail media sponsored placements and on-site display; newsletter monetization with first-party identity; unified ad ops for digital signage/DOOH; and video monetization across web and OTT. Privacy is built-in (GDPR/CCPA), and our team offers custom engineering when you need something bespoke. Backed by 25+ years in ad tech and trusted by 10,000+ customers, AdButler pairs modern infrastructure with “real human” support. Pricing starts at $179/month for 1M requests. Try the platform free or book a demo to see how quickly you can ship your next ad product.