Magento 2 has its own peculiarities when it comes to SEO. This article explains what the new platform posesses when it comes to optimization and the changes if compared to Magento 2: everything about meta tags, URLs, categories optimization, canonicals, sitemaps, microdata, etc.
Magento 1 had quite a lot of SEO drawbacks, and site owners were really waiting to see those positive changes in the new platform.
Also, any feedback is appreciated - if after reading the article you still feel you missed any of the points - feel free to share your opinion in comments, I would love to update the article to make it as full as possible so it could serve the community better.
Thanks in advance!