The entire world is becoming increasingly internationalised due to different factors, mainly increased communication between countries and organisations. This increased internationalisation has contributed to that companies now much easier can take advantage of opportunities all over the world than they could do in the past. We have in this thesis investigated both the prerequisites for expanding the business of a Swedish high-technology firm selling ambulance information systems to Denmark, Finland, England or Norway, and also which of these countries is most suitable to start the internationalisation in for such a company. Our findings show that the main objectives for internationalisation are saturated domestic markets and to achieve faster economic growth. Furthermore, we have found that it is very important to make a thorough marketing plan and analyse the new foreign markets carefully for the internationalisation to become successful. Our investigation points out that a Swedish high technology company selling ambulance information systems that wants to internationalise should select Denmark and/or Norway as the first foreign country to enter. Although Denmark and Norway were considered more suitable than Finland and England, we are of the opinion that England and Finland cannot be ruled out as unsuitable on the bases of this investigation. The procurement of ambulance information systems in the four investigated countries is very similar to organisational procurement in general. Finally, suggestions for further research are provided.