supplier organizations. This is a benefit for both the customer and the supplier organizations because selecting a suboptimal strategy obviously brings along higher costs. The chapter #Service Planning describes the situation and risk analysis and the design of a service delivery strategy. Contract as a control instrument ISPL helps the customer and supplier organisations to set up a contract that specifies all critical aspects of the procurement. For example, the list of requirements, the budget and the delivery plan are all fixed in the contract. This provides both customer and supplier organisation with a very powerful control instrument. One of the benefits for the customer organisation is that the supplier organisation will be highly motivated to meet all the deadlines because otherwise the supplier commits contract breach. One of the benefits for the supplier organisation is that it becomes much harder for the customer organisation to change the requirements which would slow down the development process. In short, with ISPL there is a better control of costs and time-scales. History ISPL is developed and published in 1999 by a consortium of five European companies: EXIN and ID Research (ORDINA) from the Netherlands, FAST from Germany, SEMA from France and TIEKE from Finland. The development of ISPL was part of the SPRITE-S2 programme that was launched in 1998 by the European Commission. ISPL is derived from Euromethod and based on the research of about 200 real-life acquisitions. Structure Although ISPL is a best practice library it does not only consist of books. The structure of ISPL is displayed in Figure 1. In this figure the books are represented by squares and the other tools are represented by circles. The basis is formed by four practical books, the IS Procurement Management Essentials. Additionally, a specific book addresses public procurement. Plug-ins to the IS Procurement Management Essentials are provided for specific needs and situations. Currently, three plug-ins are available for which there is a large market potential. A fourth plug-in on the acquisition of product software is currently under construction. Follow the links below to get more information on the different parts of ISPL. #Managing Acquisition Processes #Specifying Deliverables #Managing Risks and Planning Deliveries Meta-Process Model Figure 2 illustrates the meta-process model of ISPL. This model can be used to easily link and compare ISPL to other Information Technology methods and frameworks. I will provide each process with a link to more information.