Sure, batch SFTP exchange of HL7 CDA files is still common. But for HL7 V2 messages it's more common to use MLLP through a VPN, and of course HL7 FHIR is mostly

Sure, batch SFTP exchange of HL7 CDA files is still common. But for HL7 V2 messages it's more common to use MLLP through a VPN, and of course HL7 FHIR is mostly through HTTPS.