WMS


### difference betwwen tilewms wmts
> [Difference between TileWMS and WMTS in openlayers 3?](https://stackoverflow.com/questions/36846675/difference-between-tilewms-and-wmts-in-openlayers-3)

### xyz and wmts and tms
> [What are the Differences Between TMS, XYZ & WMTS?](https://gis.stackexchange.com/questions/132242/what-are-the-differences-between-tms-xyz-wmts)





