In this collection, we have collected some points that we think should be taken into account if we consider interaction as an implementation model. The articles are based on the findings that appear in the research articles, supplemented by our own experiences from practical advocacy work where interaction has been a topic.

The range of moments is not intended exhaustive, and the range can be expanded. It is important to note that there is no standard for how interaction should, or should, be conducted. If one can allow for a mild exaggeration, there are probably as many varieties of interaction as there are builders. Consequently, interaction must be said to be in a developmental phase despite the fact that interaction has been used for more than 20 years.

In a construction or construction project, it will always be the builder who makes a decision on whether interaction should be used. Therefore, the articles are probably written with builders as the main addressee, but contractors who are going to interact will also be able to benefit greatly from reading them. The same goes for advisers. Namely, we have a lot of input that also has advisors and contractors as addressees.

The articles are divided into three main parts, but they should be read in one context.

The first contains points that should be considered before deciding at all whether interaction can be a suitable model. Secondly, we have two sub-articles that deal with aspects that the parties should consider when interacting in phase 1, and an article that deals with points that should be considered if the interaction is to be continued into phase 2.

Since interaction is still in a development phase and because there are limited materials available that account for good and bad experiences with interaction, we are grateful for your input and comments.