One measure for a Service

Customer view the interface part of service. But from architecture and design perspective apart from interface quality of code is very important. Keeping in mind this picture I have developed one measure:

Quality of Code (in percentage) =100* (Volume of code implementing business logic of service)/ (total volume of code for service)

Here the basic question arises how to measure volume of code. The traditional approach is LoC. But in OO world this is one of the biggest problems.

The measure, Quality of Code is not measure of Quality of service but one of the several measure which gives indication on frameworks used to realize a service. In ideal case the peripheral code to create a service should come from the framework/platform.