Difference between server jobs & parallel jobs - DataStage

What is difference between server jobs & parallel jobs?

Server Jobs :

-The server jobs are made available once Data Stage Server is installed.
-They are connected to other data sources to meet the necessity demands.

Parallel Jobs:

-Parallel Jobs are available only when Enterprise Edition is installed.
-Parallel jobs run on Data Stage servers which are of SMP,MPP or cluster systems.
-They can run on z/OS systems when needed.