In Azure traffic b/w business logic layer and database incoming/outgoing is chargeable?
If yes, how to calculate the cost?
Thanks.
You could check the Bandwidth Pricing details here
Irrespective of the services you consume, data transfer is billed specifically for outbound transfer. you will be metered for all data leaving a given region.
You can calculate the charge by creating a POC as it might differ since it involves lot of other details/payload.