Focus on security
When colleagues from all over the world have access to your information, security is key. As part of the review process, make sure your IT team knows where you are currently working in and where you might expand in the near future to avoid unpleasant surprises. They need to know the data security laws in those particular countries so that any kind of system you buy or build is compliant. These regulations vary widely from country to country, so take the time to do your due dilligence and to avoid problems later on.
You should also look for features in the system to help your team in different time zones, such as the possibility for a user to reset their own password. You don’t want someone in Asia to lose a day’s work because your system administrator is asleep in the U.S. and unavailable to reset the password.