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While integrated LED replacement lamps are designed around conventional lamp sockets, these interfaces are impractical for LED lighting fixtures, the majority of which are designed as highly integrated devices. This allows the product to be optimized around the technology but means the light source and control gear (driver/power supply) cannot be easily replaced. Some products are designed around components that are replaceable but only with major disassembly. A growing number of fixtures are entering the market that offer replaceable components, but the connections are proprietary, providing durability but not choice. Enter Zhaga, an industry consortium founded in 2010 around the goal of providing interchangeability of LED light sources made by different manufacturers. The organization now has more than 270 companies and organizations participating, including big names such as Acuity Brands, Cooper, Cree, GE, Osram Sylvania, Philips and Zumtobel.