Multivariate Tobit models are estimated using German cross-sectional data to test whether strategic complementarities exist between expenditures in four different types of ICT-components. If two ICT-components are complements, they are correlated (provided that agents act rationally)....

In the era of unstoppable IT development, the use of various information systems is an essential requirement for all enterprises. In particular, micro-enterprises are in a difficult position since they need continuous development to remain competitive with the possible help of information...