Everyone is building AI agents, but very few are running them in production at scale. The transition from a successful prototype to a mission-critical system is where most agentic projects fail. When we started building the Akka Agentic Platform, we quickly realized that most agentic stacks shine in demos, but nobody talks about the "Day 2" operational realities. Distributed systems challenges, like state consistency, partial failure, and durable execution, are magnified tenfold in agentic systems.

In this talk, I’ll share the engineering lessons, trade-offs, and mistakes we encountered while designing a platform capable of supporting millions of autonomous, long-lived agents. You will see how we design durable workflows so an agent never forgets its goal or wastes tokens re-running expensive reasoning steps after a crash. I will show context engineering at scale, using sharded, in-memory entities to give agents sub-millisecond access to conversation histories. We will cover evaluations and guardrails that actively govern agent behavior. And finally, observability, which gives deep debugging insight into the inherently non-deterministic interactions with LLMs.

Whether you are building your own internal platform or just want to understand the broader agentic ecosystem, this talk delivers a practical roadmap. It highlights common pitfalls and shows how to build AI systems you can actually trust, whether you use Akka or another stack.