Introduction to knowledge graphs

A knowledge graph is a way to transform raw data into a network of meaning. It models how customers, products, processes, and events interact—creating a semantic foundation that helps businesses move beyond disconnected data towards actionable insights.

Knowledge graphs and AI

Artificial intelligence (AI) is only as good as the data it comprehends. Without context, AI models are prone to errors or incorrect outputs.

A knowledge graph grounds AI in business. It provides context and shows how entities are related, what matters most, and which patterns are meaningful. This grounding plays a critical role in ensuring AI models provide accurate, trustworthy results while significantly reducing the likelihood of hallucinations.

This is why knowledge graphs are the backbone of many intelligent applications today. From personalised recommendations to fraud detection and automated workflows, businesses are turning to knowledge graphs to:

• Access distributed data without needing to move or duplicate it
• Enable faster, more reliable decision-making across functions and processes
• Support intelligent applications and AI agents with business context to enhance performance and streamline workflows

How a knowledge graph works

A knowledge graph functions as a part of a semantic data layer that mirrors real-world business operations. It does this by linking data across clouds, systems, and domains whilst capturing the relationships that give it meaning. Here are the elements that make this connection possible:

• Nodes: These represent entities such as customers, products, suppliers, transactions, and locations
• Edges: These describe how those nodes are connected; examples include “buys from,” “owns,” “supplies,” “located at,” etc.
• Properties: Additional details about each entity or relationship

Semantic representation

What sets a knowledge graph apart is its ability to create a semantic representation of your data. Rather than treating “Customer X purchases Product Y” as a simple transaction, the graph models the underlying meaning and context.

It recognises this as part of a broader ecosystem, surfacing insights about supply chain risks, customer behaviour, or operational trends by understanding the data and showing how it relates to everything else. This results in AI models that can provide fast, accurate, and contextually rich answers.

The relationship between knowledge graphs and ontology

A knowledge graph isn’t a collection of disorganised information—it’s powered by a semantic data model called an ontology. Think of it as the blueprint for understanding your data. It defines:

• Entities: What things exist (customers, products, assets, employees, etc.)
• Relationships: How those things are connected (buys, manages, supplies, belongs to, etc.)
• Rules: Business logic and constraints that help maintain consistency

Together, the knowledge graph becomes a rich, organised, and powerful network that’s capable of driving AI models, decision-making, and process automation.

How knowledge graphs and vector databases work together

As AI models increasingly handle unstructured data, such as text, images, and videos, knowledge graphs become more critical when paired with vector databases.

Vector databases help AI find things that are similar—like identifying similar documents, products, or images based on mathematical embeddings. Knowledge graphs help AI understand how things are interconnected.

Together, they enable AI systems to be both intuitive (pattern recognition) and intelligent (contextual understanding), which leads to more reliable data, accurate recommendations, and better outcomes.

Benefits of a knowledge graph for businesses

• Organise disparate information
  A knowledge graph, combined with a semantic data fabric, connects data where it lives without needing to centralise it.
• Improve operational efficiency
  Query complex questions quickly without needing complex SQL or coding. Knowledge graphs enable the automation process based on how entities connect and behave.
• Deliver better customer experiences
  Knowledge graphs allow organisations to offer personalised recommendations, optimise customer journeys, and tailor offerings based on a real-time understanding of customers and their needs.
• Enable smarter decision-making
  Identify patterns, dependencies, and opportunities that were previously hidden amongst disconnected data sources.

Real-world applications

Organisations are adopting knowledge graphs to solve complex, high-impact business challenges.

Recommendations powered by AI

By connecting customer behaviour, purchase history, and product attributes, knowledge graphs enable hyper-personalised recommendations in real time. Whether in retail, digital commerce, or subscription services, organisations can tailor experiences to individual users to increase engagement, conversion, and satisfaction.

360-degree customer perspectives

A knowledge graph can unify customer data across marketing, sales, service, and support systems. Instead of isolated records, organisations gain a single, context-rich view of every customer interaction. This enables better targeting, faster resolution, and more informed decision-making at every point of contact.

Fraud detection and risk analysis

Patterns of fraud and risk often lie in the relationships between people, transactions, and accounts. Knowledge graphs allow businesses to identify hidden connections that traditional systems miss, enabling faster detection of suspicious behaviour and more proactive risk management in areas like banking, insurance, and procurement.

Supply chain optimisation

Supply chains involve countless suppliers, products, logistics partners, warehouses, and the relationships between them. A knowledge graph can visualise and analyse these connections to spot disruptions, optimise routes, identify alternative suppliers, and assess dependencies, leading to improved outcomes and efficiency.

Data discovery and exploration

For analysts and business users, knowledge graphs make it easier to navigate complex data landscapes. Instead of needing deep technical skills or manually stitching together datasets, users can explore relationships to reveal faster insights and reduce decision-making time.

How to get started with a knowledge graph

• Start with a key use case: Focus on a domain such as customers, products, or supply chains
• Define your entities and relationships: Build (or adopt) an ontology that reflects your business
• Choose a cloud-native data platform with an enterprise-grade semantic layer that supports knowledge graphs, integrates with relational and analytical workloads, and allows AI models to access context-rich data across distributed systems
• Run a pilot: Start with a recommendation engine, fraud detection, or operational workflow
• Scale over time: Expand your knowledge graph database as new data sources and use cases arise

Scaling knowledge graphs across the enterprise

A knowledge graph delivers the most value when it’s part of a broader data ecosystem. A semantic data foundation that spans operational, analytical, and external data sources makes this possible.

By connecting the knowledge graph to this foundation, businesses can ensure that insights are always available regardless of where the data resides. This approach supports AI-driven applications and enables governance, scalability, and agility within the organisation.