As your organization expands its usage of Google Cloud Platform (GCP), various teams are establishing their own projects. These projects are further diversified to cater to different deployment stages and target audiences, each requiring unique access control configurations. The central IT team requires access to all projects. Additionally, data from Cloud Storage buckets and BigQuery datasets needs to be shared across projects on an ad hoc basis. You aim to streamline access control management by minimizing the number of policies. What are two recommended steps to achieve this goal? (Select two.)