Event-Driven vs. Request-Response Agent Orchestration: Why Enterprise Backend Teams Are Choosing the Wrong Execution Model for Long-Running Multi-Agent Pipelines

There is a quiet architectural crisis unfolding inside enterprise engineering organizations in 2026. Teams that spent the better part of the last two years building multi-agent pipelines are now hitting a wall. Latency spikes, cascading timeouts, runaway infrastructure costs, and brittle retry logic are symptoms that keep appearing in post-mortems.