If you have only one project, having an organisation or no changes very little (some features aren’t available, such as organization policies – but of course you don’t have an organization!), hierarchical firewall rules, or security command center).
You will have a real difference if you manage several projects: IAM is a use case, Cloud Logging sink and asset inventory.
However, it’s safer, and cleaner, to solve your previous issue with organization/project that you have previously than creating a standalone project.
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