While Vault provides businesses tons of functionality out of the box, what feature allows you to extend its functionality with solutions written by third-party providers?

While Vault provides businesses tons of functionality out of the box, what feature allows you to extend its functionality with solutions written by third-party providers?
A . vault agent
B . namespaces
C . plugin backend
D . control groups

Answer: C

Explanation:

Plugin backends are the components in Vault that can be implemented separately from

Vault’s built-in backends. These backends can be either authentication or secrets engines.

All Vault auth and secret backends are considered plugins. This simple concept allows both

built-in and external plugins to be treated like Legos. Any plugin can exist at multiple

different locations. Different versions of a plugin may be at each one, with each version

differing from Vault’s version.

Reference links:-

https://www.vaultproject.io/docs/plugin

https://www.vaultproject.io/docs/internals/plugins