How do I submit a bid or proposal? All formal bids and proposals shall be submitted as specified in the solicitation document.Thrive is a web design company in Phoenix, Arizona, with a focus on optimizing websites to drive traffic and sales for small and large businesses and brands. A website design RFP is an invitation for web design and development agencies to bid on a website project. The following is a list of all formal solicitations available for open competition. To submit a bid or proposal, vendors need to register their company on our OpenGov Registration page.