What is the difference between a bid and a proposal?

Bids, known as competitively sealed bids or Invitation for Bid (IFB), refer to a contracting method in which sealed bids are publicly solicited, opened, and a contract is awarded based on price to the lowest responsive and responsible bidder. Proposals refer to a contracting method in which a solicitation is made through a Request for Proposal (RFP), and between receipt of proposals and award, discussions with vendors may take lace, which may result in price changes.

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1. Where can I find information about contract opportunities with the City of Winston-Salem?
2. What is the difference between a bid and a proposal?
3. Do I have to register with the Purchasing Department in order to bid?
4. Is there a way for the site to notify me when changes are made or new bids are submitted?
5. Where can I locate bid documents for purchasing opportunities?
6. How many days do I have to return a contract if awarded a project?
7. Am I required to attend pre-bid meetings for a project?
8. Where can I find information on upcoming bids for my service or Commodity?
9. How does a vendor do business with the City?
10. What were the results of a particular bid?
11. What is the basis for an award on bid opportunities?
12. How do I submit a bid?
13. Where can I locate bid documents for Purchasing opportunities?