Earlier this year the popular app backend service Parse announced that parse would be fully retired by January 2017.
Fortunately Parse open sourced the Parse Server which you could run from your own Node.js server, and a tool for migrating from Parse’s database.
Here are a couple of nice guides from Greg Mojica explaining step by step how you could set up the parse server on Heroku or AWS, and how you can migrate from parse to MongoDB.
You can find the tutorial on how to migrate your DB to MongoDB on the AppCoda blog here.
You can find the tutorial on setting up Parse server on the AppCoda blog here.
Handy tutorials for those who need to move their apps from the Parse service.