I am doing my very first WebGIS application with ArcGIS server using ArcGIS Javascript API 3.17. I have to bring 100 layers in my webgis application as REST service from Oracle DB. To do that whether can we publish 100 layers as one map service or each layer as one service i.e 100 map service or group the layers as 10 datasets and publish as 10 map service. please suggest that which is the efficient way to publish those 100 layers in ArcGIS server.