In a recent episode of the Software Engineering Daily podcast, Chris Bell, the CTO, discussed the inherent challenges of building an in-house notifications system and common issues teams encounter while developing product notifications. He explained the rationale behind creating Knock, a platform designed to streamline these processes, saving engineering time for product teams. Chris highlighted the choice of using Elixir for Knock's backend, emphasizing its suitability for addressing the specific problems faced by the platform. The episode, originally published on May 25, 2022, is accessible on major podcast platforms, though a transcript was not available at the time of release.