Multi account config view

Hello 
For your multi account setup you can use an Aggregator to view the resource configuration and compliance data recorded in AWS Config.
 The following public documents will be helpful.

AWS Config Aggregator - https://docs.aws.amazon.com/config/latest/developerguide/aggregate-data.html 

Aggregator Setup - https://docs.aws.amazon.com/config/latest/developerguide/setup-aggregator-console.html 

Viewing Compliance Data in the Aggregator Dashboard - https://docs.aws.amazon.com/config/latest/developerguide/viewing-the-aggregate-dashboard.html

Thanks