# Architecture ## High-Level Architecture (HLA) ![](http://docs.aws.amazon.com/prescriptive-guidance/latest/semantic-layer-agentic-ai-ontology-reasoning-virtual-knowledge-graph/images/guide-img/5cb278fc-4bbf-4e43-a830-4b4f72516d31/images/572339e9-7723-42b9-95db-8637c67bef72.png) ## Target technology stack + [https://aws.amazon.com/neptune/](https://aws.amazon.com/neptune/)** **–** **A fully managed graph database service that makes it easy to build and run applications that work with highly connected datasets. An Amazon Neptune-based knowledge graph finds relationships between projects and provides recommendations. + [https://aws.amazon.com/bedrock/](https://aws.amazon.com/bedrock/)** **–** **A fully managed service providing API access to high-performing foundation models (FMs) from Amazon and leading AI companies. It supports fine-tuning, RAG-based customization, and Automated Reasoning — without managing infrastructure — with built-in security, privacy, and responsible AI capabilities for building and scaling generative AI applications on AWS. + [https://aws.amazon.com/bedrock/agentcore/](https://aws.amazon.com/bedrock/agentcore/)** **–** **A managed platform for building, deploying, and operating enterprise-grade AI agents at scale. It provides purpose-built infrastructure, session management, memory, and security controls to move agents from proof-of-concept to production — enabling secure, reliable autonomous agent operations at enterprise scale. + [https://github.com/ontop/ontop](https://github.com/ontop/ontop)** **–** **An open-source Virtual Knowledge Graph (VKG) system that exposes relational databases as virtual RDF knowledge graphs — without moving data. It translates SPARQL queries over ontology-defined knowledge graphs into SQL executed directly against relational sources, using R2RML mappings and lightweight OWL ontologies. Built on OBDA (Ontology-Based Data Access) principles, Ontop enables semantic querying over existing data infrastructure with no data duplication. + [https://aws.amazon.com/opensearch-service/](https://aws.amazon.com/opensearch-service/)** **–** **A managed service for real-time search, monitoring, and analysis. It provides vector storage and semantic similarity search for embedding-based retrieval in RAG and GraphRAG workflows. Available as provisioned clusters or OpenSearch Serverless (auto-scaling, pay-per-use). ## Target architecture + [**Interface Layer**](interface-layer.md) + [**Intelligence Layer**](intelligence-layer.md) + [**Knowledge Layer**](knowledge-layer.md) + [**Data Layer**](data-layer.md) + [**Orchestration Layer**](orchestration.md) + [**Governance / Security**](governance-security.md)