STO

A Support Task Order is a task order issued under an IDIQ or similar contract vehicle for support services such as administrative, technical, logistical, or operational assistance. STOs define specific support requirements, deliverables, and performance periods within the scope of the parent contract.

STOs are common vehicles for obtaining staff augmentation, help desk support, maintenance services, and other ongoing support functions. They provide flexibility to scale support levels based on program needs. Contractors should understand STO ceiling limitations, labor category requirements, and performance metrics that govern support service delivery.