The PSP advantages
A study carried out in 1997, by Will Hayes and James W. Over, reveals there are many advantages to using the PSP (Process Software Engineering) method. At the SEPG (Software Process Engineering Group) event, held in February 2002, however, it was clear that much has evolved and there were countless examples of people who are satisfied with the use of the method.
According to the SEI (Software Engineering Institute), only 66.6% of the IT projects are ever concluded. Among those, only 16% are concluded within the initial deadline and budget. And, even at that, they only contemplate 60% of the initial specifications. By and large, projects exceed budgets by 189% and so far as estimated development time is concerned, such excess is even greater: 220%.
With the usage of the PSP method, the reductions of time, errors and costs are impressive. Boeing, one of the companies that presented its results at the event, reduced its systems development time by 50% and increased its productivity by 260%. The investment return ratio, in PSP, was seven to one. Raytheon, a military system development giant, had a return on investments of eight to one; it increased its productivity by 420% and reduced its test efforts by 50%.
According to data divulged by the American Department of Defense (DOD), the PSP methodology implies in an average reduction of 73% in development costs, reduces rework by up to 96%, reduces development time in 37% and practically eliminates errors, with reduction rates between 80% and 98%.
According to the SEI (Software Engineering Institute), only 66.6% of the IT projects are ever concluded. Among those, only 16% are concluded within the initial deadline and budget. And, even at that, they only contemplate 60% of the initial specifications. By and large, projects exceed budgets by 189% and so far as estimated development time is concerned, such excess is even greater: 220%.
With the usage of the PSP method, the reductions of time, errors and costs are impressive. Boeing, one of the companies that presented its results at the event, reduced its systems development time by 50% and increased its productivity by 260%. The investment return ratio, in PSP, was seven to one. Raytheon, a military system development giant, had a return on investments of eight to one; it increased its productivity by 420% and reduced its test efforts by 50%.
According to data divulged by the American Department of Defense (DOD), the PSP methodology implies in an average reduction of 73% in development costs, reduces rework by up to 96%, reduces development time in 37% and practically eliminates errors, with reduction rates between 80% and 98%.