You don’t know about lightsail containers? Why make a flowchart that omits one of the simpler solutions in favor of complex ones?
Agreed with the other commenters that this flowchart is not to be recommended, for this and other reasons.
Agreed with the other commenters that this flowchart is not to be recommended, for this and other reasons.
(Look at where the top of the "sustainable zone" is...5%? Like 1/20th of a vCPU?)