The purpose of this handbook is to summarize the knowledge and findings from the first phase of the IO Center research on Future Collaboration Environments that may be of use in preparing or improving design and use of collaboration environments. Also in the second phase, useful information and lessons learned may be gathered, and this IO Collaboration Environments Handbook is thus version 1.0, and will be updated. This handbook is not a guideline for creating collaboration rooms or layouts. Rather, it is focused towards identifying a number of issues that need to be considered and decided.