I create a Group on Office365 Admin site. It is a Security Group (by default as there is no other option) This Group doesn't have an Email associated to it. Now I create a Distribution list(Exchange admin center) and when I refresh Office365 admin site page, this group starts showing with an Email address bound to it.
Now my question has several parts.
1) Is there a diff between Security Group created from office365 admin site and Exchange admin center?
2) Why is that Office365 doesn't ask for an email when I create a Group there? But when I create a security group on Exchange admin center, it asks me that!