[Talk::Overflow #24] Replay London 2025 — Modernise

Replay 2025 took place March 3–5 in London under the banner "Modernise," bringing together engineers from fintech, logistics, pharma, telecom, and platform engineering to share how they're building production systems on top of Temporal. This wasn't a product launch event disguised as a conference. It was three days of teams who've already shipped talking about what worked, what broke, and what they'd do differently. The timing matters. Distributed systems are no longer optional — they're the default. And with every team running microservices, event-driven pipelines, and now AI agents, the question has shifted from "should we orchestrate?" to "how do we orchestrate without losing our minds?" Replay 2025 answered that question with war stories from companies processing billions in payments, managing millions of IoT devices, and running drug discovery pipelines that used to take days. The conference also marked a pivotal moment for Temporal itself: the GA of Nexus for cross-team workflow