title: Services similiar to S3 to store pictures accesible from an Android app
body: <p>I'm developing an Android app to show details and pictures about some hotels. I built a Rails back-end deployed in OpenShift and my idea was to store the pictures in AWS S3 and make them accessible from the Android app.
  Due to the complexity of AWS,Cognito,IAM,STS,Role and Trust policies, I'm thinking maybe I should reconsider the idea of using S3; but I don't know which service I should consider. 
  I need only a place where to store the pictures and then making them accessible from the app; something like S3, but easier to use.
  I'm thinking of Parse but I'm quite new to it. 
  Do you have some hint?</p>