Which federal agency first implemented a comprehensive citizen feedback analytics program that became a model for other government departments?

Government agencies have increasingly adopted private sector techniques for citizen engagement and service improvement. Customer analytics - the practice of collecting and analyzing citizen interaction data to improve service delivery - has become a cornerstone of modern governance. This trivia question tests your knowledge about a groundbreaking government analytics program that changed how agencies interact with citizens.

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U.S. Postal Service (USPS) with its Customer Experience Measurement program in 2009
Department of Veterans Affairs (VA) with its VSignals program in 2010
Internal Revenue Service (IRS) with its Taxpayer Experience Initiative in 2008
Social Security Administration (SSA) with its Citizen Feedback Analytics System in 2011