Connecting a lambda function to mongo atlas without user credentials

Hi folks, I am new with Mongo atlas I need help in connecting a Lambda function to mongo atlas without user credentials.

Hi @Abass_S_Barry - Welcome to the community.

As per the Create a Database User for Your Cluster documentation:

You must create a database user to access your cluster. For security purposes, Atlas requires clients to authenticate as MongoDB database users to access clusters.

Regards,
Jason