Light Weight

It has become now fashionable to call any software component, application, library, platform, product, and any other piece of code as light weight. Now every piece of software claim itself as light weight. Just like “Life Time Warranty”.
In reality what does light weight means??

In my point of view term “light weight” is comparative. A piece of software is light weight or not in comparison to its contemporary competitors.
I have listed few of the criteria to tag some piece of software as light weight:

1. Deployment memory foot prints.
2. Runtime memory foot prints.
3. Run time consumption of other resources other than memory.
4. Dependency on other libraries.
5. Need of containers (!)