Willow unifies the spatial, static, and live data behind every building into one intelligent model, so your teams can predict what matters, act with confidence, and cut the cost of running the built environment.
Willow is the world’s leading Operational AI platform for the built world. It connects data from building management systems, IoT sensors, equipment specs, and maintenance history into a single digital twin, a living model of your facilities, then applies AI to surface the issues that matter, quantify their impact, and take action.
Today, building systems operate in isolation and maintenance is reactive. Willow changes that, turning scattered data into oversight, insight, foresight, and action.
Operational AI is more than monitoring. Willow moves continuously from seeing everything, to understanding what matters, to anticipating what’s next, then closing the loop.
Complete visibility across every system and activity in a building, every building in a portfolio, and the shared infrastructure that connects them.
→Surface the most pressing problems and the non-obvious cause-and-effect across systems, with impact on cost, energy, comfort, and risk.
→Predict failures before they occur and anticipate changing conditions: weather events, power outages, and energy price swings.
→Turn insight into high-quality work orders and autonomous responses: the right action, at the right time, with the right context.
Willow delivers value across three layers: the improvements that show up immediately, the failures it quietly prevents, and the risks it keeps from ever cascading.
Clear, measurable financial improvements that show up immediately.
Preventing the losses that would otherwise occur, often far larger than direct savings.
What keeps catastrophic or cascading impact from ever happening.
It starts with an ontology, becomes a living knowledge graph of your portfolio, and turns into action through AI.
An ontology is a formal, shared model of the concepts in a domain and how they relate. It’s the foundation beneath every knowledge graph and digital twin.
Willow uses the open RealEstateCore ontology, expressed in the Digital Twin Definition Language (DTDL), then extends it into the largest ontology for the built world: 3,500+ models. It’s the foundation most competitors lack, and the reason Willow can scale across any building, campus, or portfolio and power a new generation of agentic AI.
Every entity is typed against a rich, shared vocabulary (Space, Asset, Capability, Event, Document), so the AI knows what each thing is.
The static attributes that give each twin depth, plus a normalized schema across an entire portfolio, so data means the same thing everywhere.
How systems and spaces connect (isPartOf, locatedIn, serves, hasCapability): the connective tissue that lets one skill reason across many systems.
Model your real-world topology against that ontology, and it expands into a full, multi-dimensional knowledge graph: every asset, space, and system, and the relationships between them, in one normalized, intelligent view.
Willow collects, validates, transforms, normalizes, and fuses complex spatial, static, and live data from a wide variety of sources, so insights scale instantly across everything you connect.
A growing library of hundreds of AI Skills generates Insights with quantified impact scores, automated root-cause diagnostics, and recommended actions across HVAC, refrigeration, metering, occupancy, and more.
Willow Copilot puts it all one question away: real-time, contextual guidance grounded in your own knowledge graph.
From there, Willow’s intelligence moves from working with you to working for you. Intelligence Agents deliver daily briefings and proactive portfolio intelligence. Action Agents read predicted occupancy and take steps to improve energy performance. Collaboration Agents handle conversational analytics, dynamic charts, and context-aware prompts.
From the field technician to the portfolio manager to the product developer, everything in spatial, static, and live context.
Everything a technician needs to find, understand, and fix what matters, in one place.
Overlay live insights and work orders on a 3D model of the building to understand what’s happening, where, and why, converging the physical and digital in one shared frame of reference.
Search any asset and instantly see its static parameters, relationships, documents, live telemetry, and full lifecycle history, with no jumping between systems or chasing permissions.
Real-time analytics surface efficiency, energy, and commissioning opportunities through urgent faults, each with automated root-cause diagnostics and configurable impact scores so teams always know what to fix first.
Willow doesn’t just detect. It acts. An Insight can carry a Command: set back equipment in unoccupied spaces, shut off water when a leak is detected, or optimize battery charge and discharge against weather, grid signals, and consumption patterns.
Work orders sync bi-directionally with your CMMS, carrying rich descriptions, pre-diagnostics, and remediation steps. Work in whichever system fits the job.
See the exact points that raised an insight, with every fault occurrence shaded over live telemetry, surfacing patterns and leading indicators at a glance.
Each insight reads like a knowledge-based summary with numbers that update as telemetry changes, plus categorization, priority, and recommended next steps.
A growing library covering HVAC, refrigeration, metering, occupancy, active efficiency, and IoT sensors, enhanced and expanded every week.
Business intelligence for energy, sustainability, occupancy, and operations, at any scale.
Customizable dashboards bring electrical energy, GHG, occupancy, footfall, comfort, and AI-driven ticket analytics together, so you can filter by building, region, or market and compare performance across the entire portfolio.
Build a home page and dashboards from a library of widgets, so the KPIs that matter to each user are front and center, with themes for accessibility.
Set a top-level context (a single building, a region, or the whole portfolio) and every view filters to it automatically.
Understand where work is concentrated and where to invest, with analytics that connect operational activity back to cost and impact.
A low-code toolkit that puts skill-building in the hands of subject-matter experts, not just software engineers.
A low-code environment lets subject-matter experts author new Skills that scale across every asset in the Knowledge Graph. Simulate against up to a year of live data in seconds, then deploy with no extra development or infrastructure.
Define anything from simple range checks to complex recursive logic using familiar, spreadsheet-style formulas, with no upskilling on code required.
Create virtual trends calculated in real time alongside physical sensors, to add context or recreate missing data points that power richer skills.
Upload a machine-learning model and reference it from any skill instantly, executed in real time with low latency and no extra development.
Reference data from disconnected systems with simple dot notation that traverses the Knowledge Graph, with no complex SQL to link silos.
Bulk-upload and centrally manage twins, relationships, files, and historical telemetry, accelerated by a vision LLM trained on deep domain expertise.
Open, secure, and built to scale across any portfolio.
An intelligent assistant grounded in your Knowledge Graph: natural-language diagnostics, guidance, and action across every workflow.
Fine-grained, location-based control with a clear split between identity and authorization, all the way down to the knowledge-graph level.
The open-source opendigitaltwins-building ontology gives the graph the breadth and depth to scale, and to encode your experts’ domain knowledge.
Rapidly onboard edge and cloud data via BACnet, Modbus, OPC, MQTT, KNX, and DALI, then build your own solutions on Willow’s independent data layer.
Traditional fault detection writes static rules for single systems. Willow operates across every system at once, and acts on what it finds.
A deep Microsoft partner, Willow has been a launch partner across Azure Digital Twins (2018), RealEstateCore (2021), and Microsoft Cloud for Sustainability (2022), and was first to demonstrate integrations with Dynamics 365 (2023).
Built on Azure and transactable through the Azure Marketplace, as a Microsoft Frontier Partner and Solutions Partner with Certified Software for Industry AI.
Certified to the international standard for information security management.
Independently audited operational and security controls.
Fine-grained, location-based control all the way to the knowledge graph.
See how Willow can help you cut costs, save energy, and operate your buildings more efficiently, in a live demo tailored to your portfolio.
See how Willow can help you cut costs, save energy, and operate your buildings more efficiently and sustainably.