Hello @bhaskarc1289447 ,
What is the operating system of your application server window or Linux?
If your application server is window then you can sync or map a folder on window server to SharePoint:
1. Setup a sync between SharePoint and folder.
Importing data into SharePoint | Microsoft Docs
Sync SharePoint and Teams files with your computer (microsoft.com)
2. Export a file with data extraction activity to the folder which you synced.
3. File will be transferred to SharePoint automatically.
If your app server in on Linux. Then you can use CURL or webAPI.
Need to upload files from Linux to Sharepoint (microsoft.com)
Thanks.
Parvesh.