There are broadly three areas for cost optimizations on the cloud: operational, infrastructural, and architectural optimizations. It is important to note that costs should not focus on infrastructure alone. You should include code changes in your deliberations because sometimes, it makes sense to focus on improving the code rather than infrastructure alone. There are many architectural decisions and trade-offs to be made to achieve the best results from a cost saving's perspective. The good part is that on cloud, you can test these decisions and trade-offs immediately to decide, if your decisions make sense.
Costs are a big motivation to use cloud infrastructure, and AWS provides many different ways of saving ...
