Centralizing Apache, MySQL Instances?

Centralizing Apache, MySQL Instances?

Am I incorrect about this or is there a separate Apache instance for each software application you have installed from AdventNet? For example, does OpUtils, ServiceDesk, and OpManager each run their own Apache instance? If so, why? Why not make it so that they centralize together. What about databases, why not better integration? Still separate databases, but one instance of MySQL instead of multiple?

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