I think it’s a pretty major advantage. For developers, it means that you’re not writing a completely new app for the platform. You can progressively add featur

I think it’s a pretty major advantage. For developers, it means that you’re not writing a completely new app for the platform. You can progressively add features for the new platform to your existing app, and most of what you learn applies to other Apple platforms. For customers, it means you aren’t taking off the device to use an app that’s not been ported.