Cross-domain telemetry architecture: dynamic observability in the computing continuum

The growing demand for cross-domain service deployments has intensified the need for robust telemetry solutions in distributed environments such as the cloud-to-edge continuum. This paper presents an extended and validated telemetry architecture capable of dynamically collecting, processing, and exporting metrics across heterogeneous domains. Built to integrate with existing distributed orchestration frameworks, the solution enables real-time telemetry reconfiguration through a policy/intent-based approach. A key innovation is the introduction of a lightweight telemetry agent that provides runtime adaptability by modifying telemetry pipelines without service interruption. The system supports both local and remote monitoring, ensuring observability even when services are offloaded to external infrastructure. Evaluation in real-world use cases confirms the effectiveness and responsiveness of the solution, achieving configuration updates in as little as 3.18 seconds. While developed within the FLUIDOS framework, the pro- posed telemetry service is flexible enough to be adapted to other distributed computing platforms.