Data in transit is data that is being transferred over a network, such as the internet. It can be encrypted to protect it from unauthorized access or tampering.

The best strategy to ensure wayward vehicle traffic does not interfere with datacenter operations is to install bollards. Bollards are sturdy posts that are installed around a perimeter to prevent vehicles from entering or crashing into a protected area. Bollards can provide physical security and deterrence for datacenters that are located near busy roads or parking lots. Bollards can also prevent accidental damage or injury caused by vehicles that lose control or have faulty brakes.

Subscription - Maintenance and support are normally a part of a license and not listed as a license type itself - Neither is version compatability. Open-source is free and doesn't normally offer any kind of support except communities.