Planner now supports guest user access to its plans. Office 365 tenants will celebrate this feature because they’ve been waiting for it to arrive. It’s curious that it has taken Microsoft so long to upgrade Planner for this feature given that Groups and Teams have had this capability for a while. But it’s here now, so enjoy.
Office 365 makes it easy to collaborate with external users through Office 365 Groups and Teams, both of which use Azure B2B Collaboration. In fact, collaboration is so easy that users might be carried away and share with all and sundry, including your competitors. Which is why it’s nice to have a policy to control sharing with certain domains that works for applications like Groups, Teams, and Planner.
Six months after allowing users from other Office 365 domains to access Teams as guest users, Microsoft now supports access from any email address. You can now invite people to join teams from Gmail, Yahoo! Mail, Yandex, Outlook.com, or any other email system. The same basic Azure B2B collaboration flow is used to invite guests and redeem the invitations, so it should be a well-worn path for administrators at this stage.