We originally used Dropbox as an easy way to store and share documents, but moved to the much more powerful and convenient Google Drive, although we still use Dropbox occasionally.
We only use Objective-C because historically we participated in the development of an open source MacOSX-only radiology workstation (Osirix). When the project decided to turn its back to open source, we joined others who felt betrayed and forked it (Horos). But ever since, we have decided to only develop browser-based multiplatform software.
We use Google Cloud Platform, Microsoft Azure and Amazon S3 (amongst others) because our platform needs to be cloud-independent to give customers the freedom they need and deserve. But being in the healthcare enterprise space, we believe Azure is the top choice... today (it tends to change often).
