I am using Frappe framework. I would like to share same data that is collected from Sign up to POS profile but keeping in mind that both of them located on different servers. Any advice?
You can use Event Streaming.
Event Streaming enables inter site communications between two or more sites. You can subscribe to Document Types and stream Documents between different sites.
For Example: Consider you have more than one Company hosted on different sites, one among them is the main site where you want to do ledger posting and on other sites, the Sales Invoices are generated. You can use Event Streaming in this case. For this, your child company sites can subscribe to the main company site for Item, Customer, and Supplier Document Types. The main Company in turn can subscribe to the child companies for Sales Invoices.
Source: https://docs.erpnext.com/docs/v13/user/manual/en/automation/event_streaming