New week and new .NET Core 3.0 preview means a new 1.3 version of Blazor.EventAggregator. For those who are not familiar with the project, Blazor.EventAggregator is a lightweight Event Aggregator for Blazor. Event aggregator is used for indirect component to component communication. In event aggregator pattern you have message/event publishers and subscribers. In the case of Blazor, component can publish its events and other component(s) can react to those events.