In the Virtual Studio, the tool that allows you to operate your Events of the type 'Production', you have an indicator about the status of the Event.
This information will let you know, for example, if the servers in the cloud are already available (started / not started) to execute all audio and video mixing operations.
Not started: the Event is not up and we can not transmit yet.
Initializing: the Event is in the process of getting up and we still can not transmit.
Initialized: the Event is up and we can start transmitting.