Combining Design Patterns for Enterprise Agents
Most production agents combine 2–3 patterns. Here are the combinations that work, and the ones that conflict.
Why Patterns Are Combined
No single pattern covers all the requirements of a production enterprise agent. Real agents combine patterns — one pattern governs the reasoning loop, another governs how outputs are verified, another governs how multiple agents coordinate. The skill is knowing which patterns complement each other and which create conflicts.
Common Pattern Combinations
ReAct + Tool Use + Human-in-the-Loop
The baseline production combination. ReAct drives the reasoning loop. Tool Use defines the governed action surface. Human-in-the-Loop adds approval gates for consequential actions. This combination covers most enterprise process automation use cases.
Plan-and-Execute + Parallelization + Reflection
For complex, multi-step tasks where quality matters. The agent plans the full approach, executes sub-tasks in parallel where possible, and reflects on the output before delivery. Good for report generation, research tasks, and complex analysis.
Orchestrator-Subagent + Router + Multi-Agent Collaboration
For enterprise-wide agentic platforms serving diverse request types. The router classifies incoming requests. The orchestrator decomposes complex tasks. Multiple specialist agents collaborate on execution. This is the architecture of a full-scale enterprise AI platform.
Memory-Augmented + ReAct + Human-in-the-Loop
For digital workers and high-context agents. Memory augmentation provides continuity across sessions. ReAct drives the reasoning loop. Human-in-the-Loop maintains control over consequential actions even as the agent accumulates context over time.
Patterns That Conflict
Chain of Thought + Parallelization: CoT is inherently sequential (each thought builds on the previous). Parallelizing CoT reasoning breaks the chain. Use CoT for the planning phase and Parallelization for the execution phase.
Reflection + Real-time requirements: Reflection adds a full generation cycle. Don't combine Reflection with use cases that have strict latency requirements.