Architecture AI Updates: June 26, 2026

1. Per-Agent Isolation as the Foundational Unit of Trust for Agentic Workloads

InfoQ (Patrick Farry). Grab built Palana, a Kubernetes-native platform that runs autonomous AI agents under a zero-trust model where each agent gets its own dedicated namespace with restrictive RBAC, custom network policies, and isolated service accounts, so a breach in one agent cannot reach the others. The design decouples secrets management by keeping credentials in HashiCorp Vault and handing agents only placeholder tokens, while a secure intermediate proxy intercepts outbound calls, validates destinations, and substitutes real secrets at request time so the raw value never lands in the container environment, memory, or logs. A custom operator reconciles namespaces, storage, and network policies as infrastructure-as-code, and centralized egress through an Envoy proxy with Open Policy Agent rules adds traffic inspection, network-level kill switches, and external reapers that operate outside the agent runtime. The pattern is a useful reference for teams treating agent containment, not agent capability, as the primary architectural concern. Source