The purpose of this mixed-method evaluation is to complete a series of case studies in five cities to identify best practices, barriers, recommendations, and other considerations for healthy vending policies and initiatives affecting children and youth. Vending machines that are accessible to children and adolescents will be the focus of this evaluation. Semi-structured interviews will be conducted with multiple stakeholders from each site which will focus on facilitators and barriers to implementing and evaluating healthy vending policies. The interviews will gather information on recommended policy language or evaluation methods that should be included in future healthy vending policies. During site visits, observations of vending machine content and the general food environment using an adapted version of the NEMS-V (food and drinks available, placement and promotion of healthier items, compliance with healthy vending policy) will be conducted, as well as people purchasing food and drinks from the vending machines. Additionally, short intercept surveys will be conducted with adults using the vending machines to assess reactions to the products available in the vending machines and to ask about purchases. Finally, sales data will be used when available to understand purchases, trend, and impact on businesses.