Hi Byron –
By default, centralized Toolkit configs have what’s called a localized core - each project config has its own install/ directory, and within it, its own copy of all the apps and engines it uses, as well as tk-core itself.
But you can choose to move some or all projects to a shared core – in this scenario, projects sharing a core will get tk-core and their apps and engines from a shared location. If you want to implement a shared core, take a look at the following forum post and this document to learn more about setting it up:
Hope that helps clear up any confusion! Let us know if you’re still hitting snags.