I'm trying to navigate the extensive Salesforce licensing grid. My question revolves around external Lightning applications and user licenses. If I wanted to set up a Lightning application that runs external users through a survey workflow, say just a series of questions that saves information to objects, does each person who uses the survey need a license? Lightning apps seem like a great platform for such applications (rather than creating an entire website server stack), but if licensing gets complicated that makes the platform seem less feasible. If I want the survey to collect data from 100,000 people the costs would add up quickly.
Any guidance or links to licensing information would be helpful! Thank you!