Hello Harsch,
until now there is no integration between Microsoft Office 365 and SAP Business ByDesign.
You can view the supported Microsoft Office for SAP ByDesign in the System Requirements documentation which is described in the following link:
http://www.sap.com/pc/tech/cloud/software/business-management-bydesign/implement/requirements.html
Thanks and best regards
Kai Ziegenhals
SAP Product Support