What are the following descriptions of open source OpenStack components, and what are the errors?

The OpenStack architecture includes not only the components of computing, network, and storage, but also other module components such as orchestration and shared services

The OpenStack computing resource architecture adopts a multi-level architecture, from top to bottom: Region and Host Aggregate 、AZ

OpenStack controls and manages corresponding resources through the collaborative interaction of various components

OpenStack uses Ceilometer components to monitor business modules, including: Cinder, Neutron , Nova, Swift、 Glance