whatstradelocked.com
It's a a site to check when people's CS:GO items will become tradable - among other things.
It's written in node with express and used to run on Google Appengine then on AWS Elastic Beanstalk
It was expensive to run so I shut it down for a few months.
I decided to bring it back serverlessly as it has minimal cost of running this way and the process of porting it to serverless would be a nice technical challenge.
The process was completed and It's now hosted from AWS Lambda, API Gateway and S3.
Available again at whatstradelocked.com
It is not going to be updated any more though.