What is a Smart Building? How Connected Buildings Improve Performance

Buildings generate huge amounts of operational data and make hundreds or thousands of operational adjustments each day. But many facilities still rely on fragmented systems and manual processes, from adjusting thermostats and monitoring equipment to responding to maintenance issues. The result is waste: of both energy and resources. Smart buildings can help reverse this cycle of inefficiency.

By connecting building systems, using real-time data to optimize performance and automating key processes, smart building technology can help optimize performance while improving business and sustainability outcomes.

What makes a building “smart” is its ability to continuously collect, analyze and act on data from all aspects of building operations. The technologies that make this possible are here today and already helping buildings operate more intelligently to support business and sustainability goals.

What is a smart building?

A smart building is a building that uses connected technologies, sensors, software and artificial intelligence to monitor, analyze and optimize building performance in real time.

Modern buildings contain complex networks of systems that need to work together to create safe, comfortable and productive environments. Heating and cooling systems, lighting, ventilation, energy infrastructure and building controls all play important roles in building performance. Traditionally, those building management systems are often operated independently, limiting visibility into overall building performance.

A smart building leverages connected technologies and artificial intelligence (AI) to bring those systems together, creating better outcomes. By connecting the many elements of a building’s operations — heating and cooling, lighting, energy systems and more — smart buildings create a more responsive and efficient environment. Coordinating these building management systems and using the data they generate to continuously optimize performance can increase energy efficiency, reduce emissions and reduce costs.

The benefits extend beyond efficiency. Smart thermostats can predict upcoming weather changes, so building occupants can focus on their work rather than uncomfortable temperatures. Ventilation can be monitored and adjusted to support healthier indoor environments. Lighting systems can adapt to occupancy levels, improving comfort while reducing energy use.

At the same time, operators can reduce manual interventions by automating routine adjustments and monitoring equipment performance. Smart buildings can also support faster issue identification, for example when a new part is needed for a failing piece of equipment. With better visibility into building operations, facility managers can make more informed decisions and leverage resources more effectively.

How do smart buildings work?

Smart buildings rely on a combination of AI and other connected technologies, controls, sensors and automation to constantly monitor conditions, analyze data and improve performance. While the specific technologies vary, smart buildings share a common goal: to use data to make better decisions and take operational actions faster than humans can on their own.

For example, AI building agents like ARIA can analyze vast amounts of data to help operators understand what is happening across their facility. Rather than requiring someone to manually review dashboards or investigate alarms, ARIA gives natural-language insights and identifies patterns that would be difficult for humans to detect, helping improve performance.

AI-powered predictive maintenance solutions and connected service platforms help smart buildings monitor the performance of critical equipment like chillers and HVAC systems. These building management systems can detect potential issues before equipment fails, helping teams address problems proactively before a costly emergency disrupts operations.

Automated building controls for smart buildings can automatically adjust heating, cooling, ventilation and lighting based on changing conditions and needs. For example, building automation systems can respond to weather forecasts, projected utility rates, and grid conditions to optimize energy use. These automated adjustments happen continuously, often without needing any manual intervention.

Smart buildings are creating impact today

Smart buildings are already delivering measurable outcomes across a wide range of industries. From office towers and distribution centers to retail facilities and industrial sites, connected buildings are helping improve business and sustainability performance.

For example, at 55 Water Street in New York City, one of the largest office complexes in the United States, AI-powered building optimization has improved energy performance while maintaining comfort levels for occupants. By continuously analyzing building conditions and automatically adjusting HVAC operations, the system can respond to changing occupancy patterns, weather conditions and energy needs in real time. The building upgrades have helped reduce energy consumption by over 60% since 2010, while creating up to $1.5 million in annual utility savings.

Smart buildings are also delivering value in retail and distribution. At Dollar Tree, AI-powered HVAC and connected building technologies were deployed across 600 stores, helping save almost 8 million kWh of electricity and over $1 million in costs. And in a pilot at three Amazon grocery fulfillment centers, AI-powered building optimization achieved an energy use reduction of almost 15%. 

These examples demonstrate how connected buildings are moving the built environment beyond reactive management towards continuous optimization. By transforming building data into actionable intelligence, smart buildings can improve the performance of existing infrastructure.