Phone Firms Are Losing Their Grip on an Industry They Pioneered
The main efficiency benchmark is power usage effectiveness -- the energy used by the servers as a proportion of the building’s total power consumption. (Photographer: Stefan Wermuth/Bloomberg)

Phone Firms Are Losing Their Grip on an Industry They Pioneered

(Bloomberg) -- Phone carriers have been at the heart of computer networks since their birth half a century ago. Now they’ve begun a tactical retreat.
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