The outage in Discord means that the server is down or offline. It is like any other server outage when the server stops responding to the requests sent by clients. Now, this can be a result of system failures or crashes, communication issues or network outages, etc. Also, it can happen due to some technical or operational work going on at the end of Discord. It usually lasts for some time only. In any scenario, if the server is down, it is beyond your control. You will have to wait for the Discord support team to fix the issue and then you can start using it normally.