Unless eCF has made some major advancements in the last couple years, Amazon’s own retail business isn’t multi-region. So it’d be like the cobbler saying “Buy my shoes!” while wearing none, if AWS were to push everyone hard to have a multi-region strategy.
At least on AWS you typically can find capacity (outside of accelerators) by being flexible on instance types (C, M, R), instance sizes, and availability zones. Sounds like this region OP is in for Azure is constrained such that even this advice doesn’t work.