This new Docs section on the MongoDB Atlas docs should be linked to from within the UI for new users (currently the UI links to http://blog.cloud.mongodb.com/post/146993789415/atlas-on-day-one-importing-data).

We'd like this new docs page to list the best options currently, and also set expectations that a new standalone utility, in development, and soon to be in beta, is rolling out at the end of this month and will make it easier to keep a source MongoDB replica set in sync with a MongoDB Atlas cluster, allowing lower friction migrations.