Send / receive request from Excel to Google Cloud (Java)

This project is to build a simple application prototype that sends data from Excel in form of XML to Google Cloud. Google manipulates the data and send results back to excel. The result then gets displayed in excel spreadsheet. Details: > Deploy Java code in Google cloud that sums two numbers. > Add value in column A and B (multiple rows) in excel. > Build a custom button in excel that reads numbers from selected rows, generates XML, and sends XML to google cloud. NOTE: User can highlight one row or multiple rows. When multiple rows are selected by user, the xml must carry multiple rows to google cloud. > Cloud reads XML data and performs sum action. > Response XML is sent back to Excel. > Results are displayed in column C of that row. Expected outcome of this project: Canidate must produce following: > Clear instructions to setup google cloud service for this specific requirement > Clear instructions to deploy java code and any other necessary code in cloud. Include deployment steps and code. > Excel sheet with Macro