ESAR

esAR is a term used in discussions of augmented reality to describe systems that combine spatially aware AR with edge computing to reduce latency and enhance scalability. The phrase is not tied to a single formal standard; it has emerged in various contexts, sometimes interpreted as "edge-supported augmented reality" or "embedded spatial AR," and its exact meaning can vary by author or vendor.

In esAR architectures, computation for sensing, mapping, rendering, and content delivery is moved closer to the user—on local devices or edge servers—rather than residing entirely in centralized cloud infrastructure. This arrangement aims to improve latency, enable more complex scene understanding, and support multi-user experiences with synchronized content. Typical features include real-time spatial mapping, persistent anchors across sessions, occlusion-aware rendering, and cross-device synchronization. Privacy and data governance considerations are prominent because spatial data may involve video and sensor streams processed near the edge or in local networks.

Applications span industrial maintenance, construction and architecture, remote assistance, training simulations, and collaborative design review. The approach is often used when low latency, reliable connectivity, and data privacy are priority concerns, or where offline functionality is needed.

Standards and interoperability: there is no dedicated esAR standard. The field relies on broader AR interoperability guidelines and edge-computing platform capabilities, with vendors providing APIs and SDKs that support edge processing, device-local AR, and synchronized experiences.