Siemens Cooperates with Microsoft for Greater IoT Interoperability in Buildings

Press Release | Zug (Switzerland), July 7, 2025

Key Benefits of the Collaboration

Fosters interoperability between Siemens' Building X digital building platform and Microsoft Azure IoT Operations.
Leverages open standards like W3C Thing Descriptions and OPC UA PubSub for better integration of IoT-based data.
Reduces integration effort by up to 80%, leading to optimized building operations and enhanced sustainability.

Cooperation Details

Siemens Smart Infrastructure has announced a cooperation agreement with Microsoft to improve access to Internet-of-Things (IoT) data for buildings. This collaboration enhances interoperability between Siemens' Building X digital building platform and Microsoft Azure IoT Operations, built on Azure Arc. Azure IoT Operations provides tools and infrastructure to connect edge devices and integrate data, enabling companies to optimize operations and leverage their IoT environments.

The interoperability between Building X and Azure IoT Operations simplifies IoT data access for large customers in commercial real estate, data centers, and universities. It provides necessary information to improve sustainability and operations by transferring data points like temperature, pressure, or room air quality for HVAC systems, valves, actuators, and other devices to the cloud for automatic onboarding and monitoring. Customers can also develop custom use cases such as energy monitoring and space optimization.

With devices easily connectable to the cloud and efficient data exchange, customers gain unprecedented flexibility in designing their IoT architecture. Siemens' hardware and software components can be seamlessly integrated without being tied to a single vendor's ecosystem.

Technical Foundation and Vision

The cooperation between Siemens and Microsoft is based on established open industry standards: Web of Things (WoT) from the World Wide Web Consortium (W3C) for describing metadata and interfaces, and Open Platform Communications Unified Architecture (OPC UA) for cloud data transfer. Both companies are members of W3C and the OPC Foundation, contributing to an industry built on accessibility, interoperability, data privacy, and security.

This solution represents one of the first IoT data integrations based purely on open, cross-vendor standards.

Susanne Seitz, CEO of Siemens Smart Infrastructure Buildings, stated: "The cooperation with Microsoft reflects our shared vision to enable customers to fully leverage the potential of IoT through open standards and interoperability." She added, "Improved data access provides portfolio managers with a detailed view of key metrics like energy efficiency and consumption. As IoT data is often siloed, this level of transparency is a significant breakthrough for an industry aiming to optimize building operations and achieve sustainability goals."

Erich Barnstedt, Senior Director & Architect, Corporate Standards Group at Microsoft, commented: "Like Microsoft, Siemens is committed to interoperability and open IoT standards. This collaboration is a crucial step towards making IoT data more usable." He further noted, "Microsoft's strategy underscores our commitment to partnering with industry leaders to offer customers greater choice and control over their IoT solutions."

Market Availability and Product Context

The solution enabling interoperability between Siemens Building X and Azure IoT Operations is scheduled for market release in the second half of 2025.

Building X is a digital building platform designed to help customers digitize, manage, and optimize building operations, paving the way for sustainable, autonomous, and profitable facilities. Building X is part of Siemens Xcelerator, an open digital business platform that makes digital transformation simpler, faster, and more scalable for customers.

Further information about Siemens Smart Infrastructure can be found at Siemens Smart Infrastructure.

Follow Siemens on X: www.x.com/siemens_press, www.x.com/siemensinfra.

Contact Information for Journalists

Siemens Smart Infrastructure
Maike Wagner
Tel.: +41 79 448 9214
E-Mail: maike.wagner@siemens.com

About Siemens Smart Infrastructure

Siemens Smart Infrastructure (SI) shapes the market for intelligent, adaptive infrastructure for today and the future. SI addresses the pressing challenges of urbanization and climate change by connecting energy systems, buildings, and economic sectors. Siemens Smart Infrastructure offers customers a comprehensive, end-to-end portfolio – with products, systems, solutions, and services from energy generation to energy usage. With an increasingly digitalized ecosystem, SI helps its customers succeed in competition and society evolve, contributing to the protection of our planet. The headquarters of Siemens Smart Infrastructure is located in Zug, Switzerland. As of September 30, 2024, the business employed approximately 78,500 people worldwide.

About Siemens AG

Siemens AG (Berlin and Munich) is a leading technology company focused on the fields of industry, infrastructure, mobility, and healthcare. The company's ambition is to develop technology that improves everyday life for everyone. By connecting the physical and digital worlds, it enables customers to accelerate their digital and sustainable transformation. This makes factories more efficient, cities more livable, and transportation more sustainable. As a leader in industrial artificial intelligence, Siemens leverages its extensive expertise to apply AI – including generative AI – to real-world applications, developing AI solutions for customers across all industries that offer genuine added value. Siemens is the majority owner of the listed company Siemens Healthineers, a leading global medical technology provider pioneering advancements in healthcare. For everyone. Everywhere. Sustainably.

In fiscal year 2024, which ended on September 30, 2024, the Siemens Group generated revenue of €75.9 billion and a profit after tax of €9.0 billion. As of September 30, 2024, the company employed approximately 312,000 people worldwide on a continuing basis. Further information can be found on the internet at www.siemens.com.

	Siemens Smart Infrastructure Solutions Overview An overview of Siemens' comprehensive Smart Infrastructure solutions, covering fire safety, voice alarm systems, gas detection, access control, intrusion detection, building automation, electrical products, and digital services for enhanced efficiency, sustainability, and security.
	Siemens Energy Manager Building X : Optimisation Énergétique et Digitale des Infrastructures Immobilières Découvrez Energy Manager de Siemens, l'application Building X qui accélère la transformation digitale de vos infrastructures, réduit les coûts énergétiques et favorise la décarbonation de votre parc immobilier.
	Building X Operations Manager Data Sheet Siemens Building X Operations Manager provides remote operation and monitoring of building equipment, including HVAC systems and meters, for a fleet of connected sites. Features include multi-site overview, real-time visibility, data history, event notifications, and FDD root cause analysis.
	Siemens Technologie schützt Kulturgüter der Staatsbibliothek Berlin, senkt Kosten und Emissionen Siemens Smart Infrastructure modernisiert die Staatsbibliothek zu Berlin mit intelligenter Gebäudetechnik, reduziert CO2-Emissionen und Energiekosten. Das Projekt schützt Kulturgüter und unterstützt das Klimaschutzprogramm der Bundesregierung.
	Siemens Lifecycle Twin Building X Data Sheet Data sheet for Siemens Lifecycle Twin Building X, a Building X offering that provides a single pane of glass for data related to equipment, other assets, and location throughout a building's lifecycle. It integrates data via APIs, enabling data quality reports, 2D/3D visualization, navigation, and asset management.
	Siemens Financial Services: Easing the Transition to Smart, Energy-Efficient Buildings An overview of the financial challenges and opportunities in upgrading commercial and industrial buildings to improve energy efficiency and smart capabilities, with a focus on flexible financing solutions from Siemens Financial Services.
	Siemens Building X Sustainability Manager Data Sheet The Siemens Building X Sustainability Manager is an analytical platform designed to provide transparency on energy, carbon, and water sustainability for building portfolios. It helps portfolio owners achieve Net-Zero Sustainability goals by offering insights into building performance, emissions reporting, renewable energy tracking, and cost management.
	Siemens Building X Occupancy Application Data Sheet Data sheet for Siemens Building X Occupancy Application, detailing its features, functions, subscription plans, and supported connected devices for optimizing building occupancy and utilization.