ArcGIS for JavaScript is too different from Baidu map js. Arcgis is a complete ecology, while Baidu js is just a library. On the surface, you can render the map, but Baidu's js operating space is too small.
Baidu uses its own coordinate system, map layer data is also his own, a set of js api is short and fast, simple development is enough.
arcgis can publish layer data services on its own. You can choose various types of services according to conditions and choose unused map base maps, while Baidu Maps are all slicing services. Baidu Maps is not an encapsulation of arcgis.
the purpose of deploying the mapping service is to install these two, connect the database with arcmap, and convert the data into a layer service publishing service to, arcgis js on arcgis server to invoke resources on server. If it is a slicing service, it will be directly cached on the server, and if it is a dynamic layer, the server will access the database to render and return it to you. Baidu map is rendered by front end except the layer is sliced, and the speed is slow, while arcgis, you can leave a lot of things to arcgis server