The best way for users to self-update their contact information in CRM?

Hi community,

My organization is looking for a solution that would allow our clients to self-update their personal information in CRM. We are considering Microsoft Portals as the primary solution. The idea is for clients to log in to a portal where the record attached to their email in CRM would be displayed. After they make necessary changes, their record would be updated accordingly in CRM. Does anyone have experience of implementing a similar solution? What do you recommend? 

Thank you in advance!