Commercial buildings are voracious consumers of energy. The buildings and building construction sectors contribute around 30% of global energy consumption and almost 40% of CO2 emissions (direct and indirect), according to the IEA. Sustainable buildings are more than trendy, they're key to reducing humans' carbon footprint on the planet. Building owners deploy smart building solutions and building-management systems to not only cut operations costs and comply with regulations but also to do their part in reducing carbon emissions without sacrificing occupant comfort in the process. So how do you make an already smart, efficient building smarter and more efficient?