Studio Web provides you with three methods to upload layer data to your map:
•Add Layer from an Esri Portal - add layer data from a layer that lives in your Esri portal.
•Quick Add Layer from File - add layer data from an external file. Web automatically detects and applies default settings.
•Guided Add Layer from File - add layer data from an external file via an interface that guides you through the process. You can review, adjust, and configure the file data.
When you add layers, they are temporary and only exist for the length of the browser session.
To use the Add Layer from File methods, the CSV or XLSX file must contain one of the following:
a.A point geometry with header information and columns named either:
•x, y, z
•x, y
•lat, lon
•lat, long
•latitude, longitude
b.A geometry with or without header information encoded in either: