The previous decade has witnessed major change within the Information Systems (IS) environment with a corresponding emphasis on the
importance of specifying timely and accurate information strategies. This paper responds to this emphasis via the development of an
optimisation model to aid the formulation of IS strategy. The model is suitable for all organisations which seek to plan long-term investment
strategies; however, it is particularly applicable to small- to medium-sized enterprises which need to balance long-term investment against the
risk of short-term expenditure. The paper initially describes the modular nature of the model prior to a disclosure of the optimisation process
at the centre of the approach. The optimisation method uses a Linear Goal Programming mathematical approach to analyse IS investment
projects through the multivariable optimisation of business goals. The paper concludes with a discussion of the validation of the model via an
industrial case study.