Complex sentence: The Alliance for Telecommunications Industry Solutions (ATIS) is a standards organization that develops technical and operational standards and solutions for the ICT industry, headquartered in Washington, D.C. The organization is accredited by the American National Standards Institute (ANSI).
Split into simpler sentences: The Alliance for Telecommunications Industry Solutions (ATIS) is a standards organization that develops technical and operational standards and solutions for the ICT industry. ATIS is headquartered in Washington, D.C. The organization is accredited by the American National Standards Institute (ANSI).