Posted on April 13, 2016
Your Office 365 calendar can be accessible in a public area but it is required administrator support to configure the corresponding settings. You can also do the opposite: display any external calendar that supports iCal data sources using Calendar Overlay Pro by Virto.
About the author 
Tatiana Sushchenko is the product owner at VirtoSoftware. She started her IT career with the famous ABBYY Lingvo back in 2006 in Moscow. Then she moved to Microsoft performing strongly in various marketing management roles across Visio, SharePoint, Office 365 and Project for almost 10 years. Tatiana is a graduate of the Institute of Business Studies and holds a mini-MBA degree. She also graduated from Microsoft marketing excellence university.