This Training and Employment Guidance Letter (TEGL) provides general guidance for the implementation of operational requirements under the Workforce Innovation and Opportunity Act (WIOA) pertaining to the one-stop delivery system, branded nationally as the American Job Center network. Due to the broad scope of the one-stop delivery system, encompassing multiple programs administered by different Federal agencies, this guidance provides the primary components for understanding and implementing an integrated American Job Center network. Consistent with the requirement to promote increased public identification of the one-stop delivery system and the requirement for the use of a common identifier across the nation (WIOA sec. 121(e)(4)), the U.S. Department of Labor (DOL), in coordination with the U.S. Department of Education (ED), established the "American Job Center" network, a unifying name and brand that identifies online and in-person workforce development services as part of a single network of publicly-funded services. The use of the American Job Center network designation in this guidance establishes a framework for accentuating and implementing an integrated workforce delivery system. DOL and ED, in partnership with the U.S. Department of Health and Human Services (HHS) (collectively, the Departments), published the WIOA Joint Rule for Unified and Combined State Plans, Performance Accountability, and the One-Stop System Joint Provisions; Final Rule (Joint WIOA Final Rule) on August 19, 2016, in the Federal Register at 81 FR 55791. The Joint WIOA Final Rule, which became effective on October 18, 2016, can be found at: https://www.federalregister.gov/documents/2016/08/19/2016-15977/workforce-innovation-and-opportunity-act-joint-rule-for-unified-and-combined-state-plans-performance.