In government and professional contracting, an contract provides for an unspecified amount of supplies or services within stated limits during a fixed period. Most commonly known as IDIQ (Indefinite Delivery, Indefinite Quantity) contracts, these arrangements allow organizations—primarily federal agencies—to maintain technical expertise or recurring services without knowing the exact quantities or timing required at the start. Core Features of IDIQ Contracts
Subpart 16.5 - Indefinite-Delivery Contracts - Acquisition.GOV indefinite quantity