Carbon buildup in internal combustion engines

Greetings to ALL, as a new member to this forum, I would like to present a question to those engine builders and using the 3000GT twin turbo as an example. What are the different methods to tackle the problem of carbon build up in ALL areas subjected to combustion gases? is there a way to completely prohibit carbon build up in general?
I understand that direct injection vehicles seem to be having this issue and no one has really come up with a solution yet. Any and all feedbacks are highly appreciated.

I thoroughly recommend “” which came to my home and did the N/a and the TT and the results from the 30 or so minutes I think each took have now lasted 4 mot’s. The TT just starting to show little drop in performance and I will try it again if MOT shows increase in the exhaust nasties.
I think price was about £120 each back then.
Dont really understand process ,they just hook up machine with gas and chemical and run car integrating their machine mix which loosens and clears carbon deposits.

Hi thanks for that thought, however i was actually looking to see if anyone knows or has any ideas for a permanent solution and so far I have not seen anything out there on multiple forums. Carbon build up, heat and friction I guess all goes hand in hand in internal combustion engines.
In addition, methanol is bad for engine parts and will deteriorate pistons, rings, cylinder walls and where ever there is direct contact with this chemical, however a cheap way in minimizing carbon deposits. And then you have expensive service techniques that involve abrasive blasting as you have mentioned and other not so permanent ways. Additives in the oil or gas is also detrimental to engine parts, the combustion process and emissions. In other words no one has come up with a permanent solution to have ZERO carbon build up. Now one can only imagine the benefits of ZERO carbon buildup, such as, a perfect combustion cycle, ZERO knock, ZERO pre-detonation, less emissions, power and performance
especially for forced induction engines. I just may have the answer and have done research and testing on my own build using my 91 6G72TT as a test sample.