What is the best way to share galleries across an entire corporation? Can galleries be viewed by someone without a AL license? Can they bee seen via Adobe reader for instance? I know that Galleries can be exported but what if anything does it require to view these files?
If you have a place to publish them on the company intranet, you can use the Web module to create and distribute. Your IT group will have to answer you on the setup questions.
If you are using Lightroom 5.5 or later, and have a Creative Cloud license, you can use Lightroom Mobile's Web-based feature to share these to the internet for selected people to access.
In both cases, others would view them in a web browser.
There's also an SDK for people to create their own gallery designs.