aws lambda with aws-sam-local for serverless apps and aws s3 and cloudfront for html/css/js frontend For more heavier stuff I use cloudformation and to deploy

aws lambda with aws-sam-local for serverless apps and aws s3 and cloudfront for html/css/js frontend For more heavier stuff I use cloudformation and to deploy docker images to ECS The AWS-Stuff was a steep learning curve in the last months but worth it.