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