- For consumer compute consider serverless (api gateway and lambda) - this addresses the problem of idle/pre-prod environments. - Data at rest: consider s3, retention policies and glacier. - Consider aggressive retention policies on cloudwatch logs, watch out for unnecessary cloudwatch metrics (I still prefer statsd because of the percentiles) - If you use Kinesis - monitor In/Out bytes and provision shards as needed, control retention. - Watch out for cross region/hybrid (on prem) stacks - data transfer is very expensive and not obvious. - Use reserved instances. - Remove unused EBS volumes. - Watch out for high IO EBS volumes. - Use Cloudfront to cache static content.