Services that have been agreed upon in specific grades, amounts and levels of quality.
Resources
Executors who use their specific qualifications and knowledge gleaned through briefings/instructions to ensure that the services, grades, amounts and levels of quality are correct.
Time
Timeframe which has been specified to fulfil and ensure delivery of a service.
The 4-square model is used to evaluate and thus to compare value-for-money for services. Using the four parameters of budget, content, resources and time, we comprehensively describe the required service in order to obtain a holistic picture of performance.
