By design, containers also foster the development of portable applications, which enables smoother transitions between environments (development, qualification, production)
"qualification" is directly translated from the French word, this is not usual in English.
I suggest to rewrite as follows:
By design, containers also foster the development of portable applications, which enables smoother transitions between environments (development, testing, staging, production)
Here:
"qualification" is directly translated from the French word, this is not usual in English.
I suggest to rewrite as follows: