Name: Designing Trust Boundaries for Agent-to-Agent Systems: Lessons Learned from a Technical PoC - Ryuji Iijima, Softbank Corp.
Start: 2026-09-10T13:30:00+0900
End: 2026-09-10T13:55:00+0900

2026 September 10-11 | Tokyo, Japan
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IMPORTANT NOTE: Timing of sessions and room locations are subject to change.

Designing Trust Boundaries for Agent-to-Agent Systems: Lessons Learned from a Technical PoC - Ryuji Iijima, Softbank Corp.

Thursday September 10, 2026 13:30 - 13:55 JST

Hall C

As AI agents increasingly invoke tools, access enterprise data, and collaborate, a new architectural challenge emerges: Where should trust boundaries be defined, and where should governance and security controls be enforced?

To explore this, we conducted a technical PoC introducing a shared control layer across agent-to-agent communications and tool execution pathways. Rather than presenting an ideal architecture, this session focuses on practical challenges and lessons learned during implementation.

Key topics include:
- Defining the "Agent": How to define what constitutes an agent in an ecosystem and where to establish trust boundaries for validation, monitoring, and control
- Architectural Insights: Redesign considerations and insights that emerged through prototype development and PoC activities.
- Performance Trade-offs: Balancing stronger security and governance with the low-latency requirements needed for real-world deployment.

We will share practical takeaways on designing trust boundaries and navigating trade-offs among security, governance, and operational performance.

Speakers

Ryuji Iijima

Engineer, AgentSecOps Platform Initiative, SoftBank Corp.

An engineer with experience in mobile authentication, enterprise communications, data integration platforms, and AI security. He is interested in how trust can be established, maintained, and governed across complex distributed systems. His current work focuses on AI agent ecosystems... Read More →

Thursday September 10, 2026 13:30 - 13:55 JST
Hall C

Building Reliable Agent Systems

AGNTCon + MCPCon Japan 2026

Ryuji Iijima

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AGNTCon + MCPCon Japan 2026

Ryuji Iijima

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