Would it be possible to build and deploy
Meteor applications on Google App Engine or are these incompatible technologies?
I know, for example, that
Node.js is not compatible with App Engine and Meteor seems similar to Node in some respects.
Google Compute Engine (not App Engine) supports the MEAN stack (Mongo, Express, Angular, Node.js), so you can run Meteor on GCE.
Meteor relies on node.js and as such will not run on GAE until GAE supports node.js, if ever.
Meteor runs in Google Compute Engine (GCE), we installed it on a GCE vm using the normal installation procedure and runs quite fine.