Every official AWS guide is designed to make you use as many AWS services as possible, which increases the risk of spend. You have to be extremely critical of a

Every official AWS guide is designed to make you use as many AWS services as possible, which increases the risk of spend. You have to be extremely critical of anything they recommend (GUI defaults, CLI tools, guides, recommended architectures etc). There's a reason there are very well paid positions in companies to guide colleagues on how to use AWS cost-effectively and with lower risk.