1. A computer program product comprising a tangible computer usable medium having a computer readable program for managing granularity of a computing service infrastructure, wherein the computer readable program when executed on a computer causes the computer to: identify a group having a number of service requestors; identify a set of business functions that may be requested by the group of service requestors by either customized or non-customized service requests; create a value (n1) that represents the smallest number of customized service functions to realize all of the business functions; create a value (n2) that represents the smallest total number of non-customized service functions to realize all of the business functions; and iteratively determine an optimal number L of customized and non-customized service functions to realize the business functions, where L is between n1 and n2 and increases from n2 towards n1 as a number of each requestor is assigned a customized service request for each business function.
1. A computer program product comprising a tangible computer usable medium having a computer readable program for managing granularity of a computing service infrastructure, wherein the computer readable program when executed on a computer causes the computer to: identify a group having a number of service requestors; identify a set of business functions that may be requested by the group of service requestors by either customized or non-customized service requests; create a value (n1) that represents the smallest number of customized service functions to realize all of the business functions; create a value (n2) that represents the smallest total number of non-customized service functions to realize all of the business functions; and iteratively determine an optimal number L of customized and non-customized service functions to realize the business functions, where L is between n1 and n2 and increases from n2 towards n1 as a number of each requestor is assigned a customized service request for each business function. 7. The computer program product as in claim 1 , wherein the at least one set of metrics is responsive to a service requestor.