Methods and systems are presented for providing an asynchronous communication system for facilitating computing services to computer nodes across multiple availability zones. Each computer node includes a client application configured to receive a service request and to generate a request file based on the service request. The client application uploads the request file to a folder hosted by a file sharing system and shared with a processing server. When a new request file is detected in the folder, the processing server downloads the request file from the file sharing system. Based on performing one or more computing services according to the request file, the processing server generates a response file including output data from the computing services. The processing server uploads the response file to the folder hosted by the file sharing system. The client application downloads the response file and presents the output data on a device.