DALLAS--(BUSINESS WIRE)--Vertex, a leading global provider of Business Process Outsourcing (BPO), Customer Management and IT solutions, has been ranked as the number one Utilities BPO provider globally by the respected The Black Book of Outsourcing (a division of Datamonitor). The Black Book of Outsourcing industry survey investigated over 140 contracts held by 1,200 utility companies and agencies globally, and ranked 81 vendors against a range of key performance indicators (KPIs). Along with th
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