Now your Mac knows the last thing you were doing on your iOS device and vice versa. So you can start something on one device and instantly pick it up on another.
With the ability to start surfing a website on your desktop and then immediately jump onto your iPad, responsive design has never been more important. This experience is going to become seamless and I’ll bet we’ll all wonder how we ever lived without this feature, but if your site is not properly responsive or dare I say, it’s not responsive at all, the users journey might be cut short. So any developers who have not yet learnt responsive techniques and to any site owners who have not made an update, perhaps it’s about time.