I had to whiteboard a highly available, resilient solution using EC2, RDS, ELB, S3, EFS, EBS, Cloudwatch, Cloudtrail, and Route 53. The best solution would have been Lambda, S3, DynamoDB, and API Gateway, though.
I designed a turntable with a focus on sound quality. I couldn't get it serially built because I ignored the fact that customers wanted a stylish unit, and they weren't focused on sound quality. I learned that being customer obsessed is the key to a succesfull product, and not what I think the market wants. Right answer - because the company wants builders, and really wants customer obsessed people.