What is difference of IFB and RFP?

Unlike an RFP, an IFB requires a sealed bid process to ensure a level playing field for vendors. This also means that there can't be any negotiations about price or services required by the contract. Evaluating an IFB is not complex like an RFP, since the only criteria that an agency has to look at is pricing.

What is IFB process?

An Invitation For Bid (IFB, IFBs) is the method used for the sealed bid process. ... The IFB also designates the date and time of bid opening. Following receipt and evaluation of the bids, a contract is usually awarded to the lowest priced bidder, determined to be responsive and responsible by the contracting officer.