It's scalability and enhanced performance

It is Responsive and search engine friendly – Magento 2’s responsive front end makes it easy to browse on all devices and enhances the user experience

Streamlined check out – the check out process has become easier and faster for customers

Easier extension updating – Installing new extensions and modules has become simpler

Ajax add-to-cart – Thanks to Ajax add -to –cart the new system doesn’t have to reload the entire page when a new item is added to the cart, which enhances the user experience

Navigation has been simplified and modernised

Dashboard – in the new system you can find the most important information in one place.

Platform compatibility – Magento 2 supports advanced Technologies such as CSS3, HTML5 and of course MySQL

Hardware requirements – Magento 2 has lower hardware requirements to ensure the same level of performance

More efficient testing – The built in testing framework makes running automated tests on any Magento site regardless of size, easy