A buyer might opt to do an 'Invitation to Tender' (ITT) rather than a 'Request...

An Invitation to Tender (ITT) is used when requirements are complex, high-value, or strategic, requiring detailed supplier submissions, robust evaluation, and structured governance. RFQs are better for low-value, straightforward purchases where price is the main factor. ITTs ensure fairness, transparency, and comprehensive evaluation when the stakes are high. It is not chosen simply because of oligopolies or time pressure. Responsible sourcing requires matching the sourcing process to the complexity and risk of the procurement, ensuring appropriate competition and governance.