You will choose the type of contract, based on what you think would be most useful to you in business.For example, if you are part of a photography studio you might choose to create contract that covers only in-house services rather than traveling to events, or vice-versa.If you are thinking of starting a facility such as a microbrewery or taphouse, then you might choose to create a contract for hosting events on-site.Perhaps you are considering starting up a food truck; you might choose to develop a contract for on-site catering at places that don't serve food.Any product or service is subject to a contract between buyer and seller.