Dev Update - Infrastructure Behind Pxl-Persona: 3D Avatars, Secure Connections, and Sovereign AI

Behind every live interview session in the Pxl-Persona dashboard is a purpose-built infrastructure designed to support real-time 3D avatar interactions in a secure and controlled environment.

While the user experience is simple, the underlying system ensures that sessions are stable, responsive, and aligned with UK-based hosting and data control principles.

Connecting to Live 3D Avatar Sessions

When a user launches an interview session through the dashboard, they are connected to a live 3D avatar running on Scenegraph-managed infrastructure.

The platform uses a matchmaker system to:

• Route users to available avatar sessions

• Manage live session availability

• Support browser-based access through shareable links

This allows interview sessions to be launched from anywhere without complex setup on the user’s device.

Real-Time 3D Streaming in the Browser

Interview sessions run as real-time 3D experiences, streamed directly to the user’s browser.

This approach means:

• No specialist software installation is required

• Trainers can share links easily

• Learners can access sessions through a standard desktop browser

By managing the 3D environment centrally, we maintain performance consistency and control over the interview experience.

Sovereign AI and Controlled Infrastructure

Pxl-Persona is built on infrastructure managed directly by Scenegraph.

We avoid reliance on large third-party cloud AI platforms for core functionality. This approach allows us to:

• Maintain visibility over how the system operates

• Control how interview data is handled

• Align hosting with UK-based infrastructure considerations

The language model used within sessions is an open-source model selected and tested by Scenegraph, allowing us to maintain oversight rather than outsourcing core intelligence.

Secure Communication Between Dashboard and Sessions

When a session is launched, secure communication connects:

• The dashboard

• The avatar environment

• The document context used during the interview

This ensures uploaded materials such as CVs and job descriptions are available to the session without being exposed publicly.

Security is treated as foundational rather than an add-on.

Built for Trainers and Institutions

This infrastructure model supports:

• Cohort-based training

• Shareable session links

• Repeatable interview practice

• Scalable delivery across groups

Because the system is centrally managed, trainers do not need to manage servers or configure technical systems. The complexity is handled behind the scenes.

Infrastructure as a Foundation, Not a Marketing Claim

We do not present infrastructure as a feature in isolation. Instead, it underpins:

• Stable live sessions

• Document-driven interviews

• Feedback and transcript generation

• Repeat practice at scale

As the platform evolves, infrastructure will continue to expand carefully to support additional capabilities without compromising stability or control.

Book a Demo

If you would like to see how live 3D avatar sessions are delivered through secure, Scenegraph-managed infrastructure, you can book a demo and explore how Pxl-Persona connects training design with real-time interview practice.