[wizofaus]

Valid why? Do you not trust compilers? Is it infeasible to (at least occasionally) run automated tests on cloud instances? Personally I've been pretty used to quite significant differences between local and production environments - it's rarely an issue, and I don't remember CPU architecture every being one. Things like timezones or firewall restrictions/ network differences (including talking to 3rd party APIs with IP whitelisting) are far more likely to cause problems.