Starting today, you have the option to automatically set up connectivity between an Amazon Relational Database Services (Amazon RDS) or an Amazon Aurora database and an AWS Lambda function using an Amazon RDS Proxy. From the Amazon RDS console, you can choose an action to set up a connection between your Amazon RDS or Amazon Aurora database and a Lambda function using an existing Amazon RDS Proxy or using an auto-created, new Amazon RDS Proxy in your account. Amazon RDS automatically sets up your related network settings to enable a secure and scalable connection between the Lambda function and the Amazon RDS or Amazon Aurora database.
Source:: Amazon AWS