The fixed costs model is an ideal option for the clearly defined software requirements specification by client. At the beginning we analyze client's requirements in order to estimate the cost of the project, its delivery date and workout a detailed plan of project completion
Items that require customer attention:
Such approach is used when customer already invested into development of high details software requirements specification and plans to get things done withing the determined project budget and timeline. It is also ideal for short time projects when it is possible to perform detailed business analysis and create detailed SRS prior to project development start.