title: CQRS event store aggregate vs projection
body: <p><strong>In a CQRS event store, does an "aggregate" contain a summarized view of the events or simply a reference to the boundary of those events? (group id)</strong></p>
  
  <p>A projection is a view or representation of events so in the case of an aggregate representing a boundary that would make sense to me whereas if the aggregate contained the current summarized state I'd be confused about duplication between the two.</p>