Build or buy: how AI changed whether your in-house realtime system is still worth it
Blog post from Ably
The integration of AI into platforms has prompted many companies to reconsider their approach to maintaining realtime infrastructure, as AI conversations demand a shift from signaling to delivery models, which require transmitting responses token-by-token without interruptions. Fin, formerly Intercom, opted to transition from its in-house realtime system, Nexus, to a managed service, achieving higher reliability and reduced operational costs. This decision reflects a broader trend where businesses evaluate the opportunity cost of maintaining self-built systems versus focusing on core product innovations. The complexities and expenses of sustaining realtime infrastructure—estimated at $100K to $200K annually—are compounded when AI-specific functionalities are added, making managed solutions like Ably AI Transport an attractive alternative for ensuring uninterrupted delivery and freeing engineering resources for product development.
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