Correct answer - "Enable API Gateway Caching" : You can enable API caching in Amazon API Gateway
to cache your endpoint's responses. With caching, you can reduce the number of calls made to
your endpoint and also improve the latency of requests to your API. When you enable caching for
a stage, API Gateway caches responses from your endpoint for a specified time-to-live (TTL)
period, in seconds.
"Use Mapping Templates" - Mapping templates allows you to display the data return in a human
readable format."Use Stage Variables" - These can be used as environment variables
"Enable In Flight Encryption" - Encryption does not help with performance and cost. Encryption is
always for security purposes