The phrase "tier system" refers to a way of categorizing things or people into different levels or groups based on certain criteria.
Sentences with «tier system»
This brief summarizes some lessons about tiered systems of support drawn from those evaluations. (mdrc.org)
However, there are also in - game purchases available, totally optional should you want to enhance your experience with the points tier system in the game. (droidgamers.com)
This is done through a two - tiered system which involves miners and master nodes. (uphold.com)