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CORS is anecessity for manyAPIs, but basic configurations cancreate a huge number of extra req...CORS is anecessity for manyAPIs, but basic configurations cancreate a huge number of extrarequests, slowing down every browserAPI client, and sending unnecessary traffic to your backend. This can be a problem with a traditionalAPI, but becomes a much larger issue with serverless platforms, where your billing is often directly tied to the number ofrequests received, so this can easily double