It only matters what you know and what you can do with it, not what certs you hold. When you are tested, what you know decides what you can answer. Hands on or not depends on what exactly you are hired for.
Someone like myself whom knows AWS enough will be able to ask questions to test if you merely touch and go, or you really know your subjects in depth. Certs or no certs doesn’t matter to me. If you dare to show me your cert/degree, be prepared to stand by it. That is what the certs mean to me, you are telling me you are good enough to hold the certs, hence I will be testing how good you claimed you are.
Storage classes in S3 are superficial knowledge, good enough for sales talk. Minimal knowledge I will looking for in an engineer whom knows S3 will be how to use it conjunction with other AWS services, presigned url, security policies on it, it’s scalability and redundancy features, how its costing model works, how it manage the prefixes, static webhosting with it, etc. Then I will know how much you know about AWS S3.
