What are company managed projects in Jira?

Unlike Jira’s team-managed projects, company-managed projects are projects that are administered at company/Jira admin level.

In company-managed projects, most of the administration is done by the Jira administrator, so the project administrator focuses only on project management. 

The Jira administrator uses a standardized way of working. They use configuration schemes through which multiple projects managed by a company can share the same configuration. When an administrator sets up a specific schema, the company has the same workflow on all projects that use that schema. If he changes the schema, the schema is changed for all projects that use it.