Is the S3 Connector compatible with existing data stores where IAM is not used? - Is the S3 Connector compatible with existing data stores where IAM is not used? - Alfresco - Alfresco Content Connector for AWS S3 - Alfresco/Alfresco-Content-Connector-for-AWS-S3/2.2/Alfresco-Content-Connector-for-AWS-S3/Alfresco-Content-Connector-for-AWS-S3/Content-Connector-for-AWS-S3-FAQ/Is-the-S3-Connector-compatible-with-existing-data-stores-where-IAM-is-not-used - 2.2

The use of IAMs is recommended best practice from AWS. Should you prefer not to leverage the IAM functionality, the S3 Connector remains compatible as long as the access key and secret key are provided in the alfresco-global.properties file. The S3 Connector will then use these credentials to connect to the S3 bucket.