Previously, you could only share content to other users with work email addresses.
From now on there is the possibility of sharing content with users who use their personal email accounts, which facilitates sharing data with people outside your organization.
This can be useful in many situations. For example, if you’re a service provider such as a financial planner, you often need to securely provide your clients reports and dashboards. Sometimes your clients prefer to use personal email addresses, like Outlook.com or Gmail, and now you can share to those people with Power BI.
When you select Share, they’ll get an invite to join your organization as a guest user. On the Access tab, you’ll see them listed.
After the user accepts the invite, you will see them marked as a guest in the access list.
To share, you must place the content in a Premium capacity or assign a Power BI Pro license so that the user can consume the content.
For more information, visit Microsoft Power BI Blog