You might have heard the news about Naples, AMD's return to the server market. (AMD Naples - Competition Re-Ignites as Zen Hits the Server Market
How AMD's Naples X86 Server Chip Stacks Up To Intel's Xeons)
The specs look good - Naples handily beats Intel's current Xeons on number of cores, bandwidth and amount of PCI-e channels.
However, Naples launches in Q2 and that's about the same time that Intel's Skylake EP will launch. Intel has given few official specs about Skylake EP. There will be AVX 512 extensions (a very important feature for some) and also it'll be on 14nm++ (really, it's Kabylake EP, more here: New Intel Xeon E5-2699A V4 and Skylake-EP Details 14nm PLUS)
Skylake EP will bridge the gap and maybe equal the performance of Naples, however AMD will be offering a lower price.
The Ryzen core has proved to perform very well, even against Kabylake. This site did a clock-er-clock and core-per-core comparison and the difference is actually quite small: Core by Core, MHz by MHz with AMD RYZEN 7 1800X vs Intel Core i7-7700K [English] | ZoLKoRn.CoM
In the server world things move slowly. Undoubtedly, OEMs will need time to incorporate Naples into their products and customers will need time to evaluate, but AMD is almost certain to gain market share in this extremely lucrative market.