I have a Web API suite deployed in Azure managed by Azure APIM that transacts with an external API. I need to ensure that the Server Certificate from the external partner is validated and pinned before proceeding with any further transaction with the partner.
In the on-premises version of this solution I had the liberty to use a 3rd party product that gave me Firewall, API gateway and Server Certificate pinning features as a boxed solution.
What Azure service do I need to utilize to accomplish Server Certificate pinning?