I like that it's easy to use, can be used with any language of your choosing (Python or Ruby), very simple configuration options which makes setup quick & painless - no need fiddling around in config files! The documentation could do better at explaining how things work internally but this isn't too much hassle once you've figured out what each piece does anyway so not really anything major here either way :). It was meant as something lightweight/easy we'd build quickly without over engineering our own solution from scratch ourselves however there are some limitations when using certain technologies eg NodeJS where they don’t support all features natively such us streams etc.. We're building micro services powered by AWS Lambda functions hence why nodejs+lambda works great together since lambda doesn' t require code uploads nor installs itself into users machines unlike Apache servers would normally.