The key is to look for emergency Microsoft Office 365 support that is suited to your communication preferences and that works on the same timescale as you do. If you need someone to answer your queries as you work on important projects to be due before a midnight deadline, find a service that can offer just this, and do not compromise.
A third and final thing that you should look for in your Microsoft Office 365 support is the experience and expertise of the company that is providing you with the service. It very easy for an individual to assign themselves the label of cloud computing expert without any real accreditation, experience or passion for these particular solutions.