Hi Luca,

Admittedly I am swimming in a pretty good amount of Kool Aid at the moment (by design) as I am attracted to solutions that check a lot of boxes in one full swoop (much like IRIS!), but one of the things I was attracted to in the eBPF space is the promise that it is more "lightweight" on resources and the promise was the "Death of the Sidecar" 

A: My pre answer with a little hand waving is, more efficient with the network stuff.

Layer 5 downloadward, less resource intensive.
Layer 7, more resource intensive... sidecar did not die here.

eBPF less intensive than Kube Proxy (iptables) uses sequential processing (isovalent benched this and stands by it).

Wish I could have looked over your shoulder in the Sysdig eval to see what you were experiencing, if you could paraphrase it and send it my way, Ill take it to the booth.

Will circle back to this after KubeCon next month and see if I can get you a real answer backed with my own evaluation, Im a meeting or two away from Tetragon Enterprise eval too, and setup on bare metal so Ill add it to the take aways to get my moneys worth.
 

After further review of the play, this app is a touchdown.  

Great work/contribution @Dmitry Maslennikov 

Ive used the reverse method like this, in a BP, converting a CCDA to SDA, then SDA to FHIR...
 

set fhir=##class(HS.FHIR.DTL.Util.API.Transform.SDA3ToFHIR).TransformStream(sdaStream,"HS.SDA3.Container","R4")

It has a counterpart that does what you are asking for in HS.FHIR.DTL.Util.API.Transform.FHIRToSDA3 which may be the method you need in a business process.