You might want to read up on GDPR progress here: https://community.developer.atlassian.com/t/atlassian-gdpr/9877 and probably post some additional questions as there as been very limited response from Atlassian in terms of how they envision GDPR implementation in regard to Customer <> Atlassian <> Marketplace Vendor relationship.
@eswarijayakumar27, do you have an app on the Marketplace?
The discussion @remie is pointing to is in a section of the community that is only available to Marketplace Vendors.