Doker added value clarification

Dear all,

I have found a post which explain the basics of docker on this link :

It is mentionned in this post the 3 main standard to keep in mine when going to docker.

" Regardless of what orchestrator we’re using, there are three key principles we need to keep in mind that set a standard for what we’re trying to achieve when containerizing applications: portability, scalability, and shareability"

I understand the 2 first, but what is the meaning of shareability in this context ?

Thanks for clarification