Spike: Prepare Security Policies Scalability Review

Time-box: 5 days

We need to prepare a Security Policies Scalability Review to ensure that our plans to support large groups and organizations are on track. groupcompliance prepared something similar with https://handbook.gitlab.com/handbook/engineering/architecture/design-documents/compliance-adherence-reporting/scalability_review/.

As an outcome of this Spike we want to: