In many situations, tiled maps are best used as background map and dynamic maps are added on top. The following example loaded the default Google map types (Normal, Satellite, Hybrid), then a cached map service built on WGS84(4326) spatial reference system, then a cached map type built on Web-Mercator(102113) spatial reference system, and finally a dynamic map whose own spatial reference system was NAD83 GCS(4269) on top of all. As map type changes, the dynamic map will refresh itself to match the underline spatial reference.