After treading water for more than a decade during an era of unprecedented advances in new technologies, the building automation systems (BAS) market is finally embracing Internet and IT technologies. The cost of implementing these once prohibitively expensive technologies continues to decline, dramatically changing how suppliers approach the automation of building controls and redefining the traditional roles of BAS solutions and their suppliers. Relationships between suppliers are also being redefined. BAS suppliers must be capable of reinventing themselves to gain control of newly expanded, but still highly fragmented, markets. Suppliers must also learn to redefine their system offerings more quickly than ever before to keep up with changes in technology, business opportunities, and customer expectations. The ever-changing role of BASs and suppliers represents numerous challenges for these suppliers, but also provides new business opportunities for those willing to adapt to the new demands of the marketplace. (10 pages)