XF 2.2 parameterBag vs filters ?

[alexAlToader]

Hi,

Cant find docs on parameterBag vs filters?
In my Api I can find the variables only with filters.
When should filters be used and when parameterBag ?

Ceers!

 

[Kirby]

ParameterBag -> Extracted from route, filled by Router
InputFilterer -> Access GET/POST params