for source control and issue management we use Github. We use git as well to push code out to Heroku GitHub1 upvote1307 views307CommentsCopy link
our main database is a MySQL RDS instance with. Schema changes are managed by rails migrations Amazon RDS1 upvote1287 views287CommentsCopy link
iOS and Android apps are stored in S3, as well as icons that we extract out of the binaries Amazon S31 upvote1304 views304CommentsCopy link
All our transactional emails go via Sendgrid, so account created, test started, test finished etc. SendGrid1 upvote1316 views316CommentsCopy link
Our app is built using Ruby on Rails. We deploy on Heroku via github. We have separate instances for prod and staging, and can increase/decrease dyno's depending on load. Heroku1 upvote1312 views312CommentsCopy link