A forecast is a projection of how much revenue or quantity you can generate from your sales pipeline for a given period of time. A forecast can be either revenue-based or quantity-based, depending on what you want to measure and track. A revenue-based forecast shows the amount of money expected from closed sales, while a quantity-based forecast shows the number of units expected from closed sales. You can choose the forecast type that best suits your business needs and goals when you set up Collaborative Forecasts in Salesforce. Reference: https://help.salesforce.com/s/articleView?id=sf.forecasts3_overview.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.forecasts3_forecast_types.htm&type=5