High-Level Orchestrator

Introduction

The aerOS High-level Orchestration part in the multi-level orchestration architecture is responsible for the smart placement of the services inside the federated domains taking into account the services requirements and the infrastructure constraints. Finally, it interacts with the Low-level Orchestrator to actually run the service in the selected IE.

HLO components

Considering its complexity and the engagements of many partners in its development, the HLO has been decomposed into different components illustrated in the image below, following a microservices architecture.

• HLO Frontend Engine
• HLO Data Aggregation and Alert System
• HLO Allocation Engine
• HLO Deployment Engine