Project E, SERP Rank-Tracking SaaS

The lesson positions Project E as the 'most commercial-feeling' capstone. What does this mean concretely for the build?

• AIt has to be profitable on day 1
• BThe codebase shape, auth, multi-tenant data isolation, per-tenant projects, billing-ready UI, is closest to what you'd actually sell as SaaS, even if you never charge
• CIt uses more SERP API budget than the others
• DIt must be incorporated as a company