Hello Gurumoorthy,Based on your question, I would recommend to check this sample called "Graphics Sample" (https://www.arcgis.com/home/item.html?id=417a0bf9dfda482c8110ebdbde3edd66)Basically you need publish a feature layer to your ArcGIS Server or ArcGIS Online hosted feature services.Then you need add the graphic symbology (pins) to your feature layer.Here is the link about how to create a Graphics layer:https://developers.arcgis.com/ios/guide/creating-a-graphics-layer.htmHope this tips can help.