This is a demo tutorial. While there is no step-by-step commentary available (yet), the live demo below is fully functional. Feel free to open it for full source code.
This short demo shows how our own MapChart can be overlaid over Google Maps using JavaScript Maps API, complete with total syncing of zoom and pan.
See the Pen amCharts 4: Using MapChart with Google Maps API by amCharts team (@amcharts) on CodePen.24419