Panda keeps growing.
Google’s Panda algorithm continues to evolve five years later, measuring the relevance of your website. It rewards (or punishes) you for your perceived value to searchers. Ignore these changes at your peril, since appearing in search engine results before your competitors is still golden.
So what’s new?
The biggest changes still involve content. Unique original content is king. More than ever, scraping content from other places will have little or no value, while original thinking will be elevated. You can’t copy and paste your way to the top.
There are other quantitative measures that continue to be promoted, such as stickiness, diversity of traffic, or how often your pages are shared, but those are byproducts of having fresh, authentic content. Be of value to readers, and you’ll feed the panda.