I’ve done it for 4 servers not for 100. I used Mobaxterm. Open the separate console for all (in my case all the servers had same folder structure) then in mobaxterm has option called “Multi Execution” what it does is you type on one server it will run same command on all the servers.
In your case it is 100… not sure if it is a good option.
If all your servers can communicate with each other then you can right shell script where you do the ssh to a server change directory run nohup ./server.sh & and then quit.
I hope this should work. Try this for 2 or three servers if works then do it for rest of the servers.