- Multiple solutions targeted on performance issues. Now Magento 2 officially support unlimited horizontal scaling.
- Simplified checkout. One of the main sales sensitive features - very simple order creation process.
- Varnish out of the box. This means that Magento 2 is now cached as default. Your website "flies".
- Smart search. Magento 2 is architectually ready for ElasticSearch and any customization for customer oriented product list.
- All the new solutions emerge for Magento 2.
- Support of Magento 1 will cease in 2019. That's not a long way to go!
Magento 1 vs. Magento 2 differences & license fees.