All of your contacts are now available in a sidebar on your dashboard and are equal to your Office 365 and Exchange contacts. So whenever you add a new contact there, it will automatically appear in your contacts sidebar. You can just simply search the person you need and click on their contact information to call them or send them an e-mail, straight from your dashboard. You can also click on a person’s location to open it in Google Maps. 

You can now do the same with global contacts (GAL), i.e. the general company contacts. This way, everyone has easy access to the company’s contact list, which for instance includes your colleagues, without having to add everyone to their personal contact list one by one.