If you are a US-based academic, you can get access to the NSF Jetstream cloud for free - and we have just made a Galaxy virtual machine (VM) available there. The VM comes preconfigured with hundreds of tools and commonly used reference datasets. It only takes a couple of minutes to start one. Once running, you can use it or change it up any way you like.
Documentation on how to get access and create your own Galaxy servers is available on the wiki: https://wiki.galaxyproject.org/Cloud/Jetstream