Hi,
as per my experiences, the Microsoft documentation is quite lack about the details useful in order to create the App Fabric Certificates.
In my implementations, about the LBD environments I use Certificates generated from the Internal Customer CA (ADCS).
Only about the AOS URL is recommended to purchase a Certificated from a certificate authority (CA) such as GoDaddy, DigiCert,…
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Dynamics AX = Denis Macchinetti: App Fabric Certificates Details
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