Parliamentary and Legal Applications
In Parliamentary-Procedure, a Quorum is necessary for any meeting to be legally valid. According to the source at Britannica, the requirement is often specified in an organization's bylaws or constitution. For instance, Roberts-Rules-of-Order states that in the absence of a Quorum, the only motions that can be entertained are those intended to obtain a Quorum or to adjourn the meeting. This prevents legislative bodies from passing laws without sufficient representation.
Distributed Systems and Consensus
In Computer-Science, specifically within Distributed-Systems, a Quorum refers to the subset of nodes that must agree on a state change to maintain Data-Consistency. This is a critical component of a Consensus-Algorithm such as Paxos or Raft. These protocols allow systems to achieve Byzantine-Fault-Tolerance, ensuring that the network remains operational even if some nodes fail. Technical documentation on this can be found at