Most vendors ask the wrong first question. They ask "what baseline do we need?" — when the actual first question is "who is our agency customer, and what impact level do they require us to operate at?"
The FedRAMP baseline is not a choice you make. It's a choice your customer makes on your behalf, derived from the data they plan to put in your system.
The short answer
If your customer will store, process, or transmit data that — if breached — causes limited or serious adverse effects, you need Moderate. If the breach causes severe or catastrophic adverse effects, you need High.
In practice:
- Moderate covers most federal SaaS use cases: general operations, non-classified CUI, email-style workloads.
- High covers law enforcement, emergency services, financial systems holding large CUI concentrations, healthcare at scale, and certain DoD workloads.
If you don't already know which one you need, you probably need Moderate.
What actually changes between the two
| Moderate | High | |
|---|---|---|
| Controls | ~325 | ~421 |
| Typical prep time | 9–12 months | 12–18 months |
| 3PAO engagement | Required | Required, longer |
| Continuous monitoring | Monthly | Monthly, deeper |
| Typical total program cost (year one) | $400K–$900K | $800K–$2M+ |
The control count delta is 96 controls — real, but not the biggest deal. The bigger delta is in three places:
- Key management and crypto. High requires FIPS 140-3 validated modules across more surfaces. If you're not already there, this alone can add 3–6 months.
- Personnel security and insider threat. Deeper background checks, more separation-of-duties rigor, more documentation.
- Incident response. Tighter detection windows, more documented playbooks, annual tabletop evidence.
The trap most teams fall into
Teams assume Moderate is a stepping stone to High. It sometimes is. More often, the architectural decisions you make for Moderate — FIPS-validated crypto selection, logging retention, boundary definition — are hard to unwind later. If there's a real chance your roadmap lands at High within 24 months, design for High now and authorize at Moderate.
What we'd recommend
Before you spend a dollar on a 3PAO or a GRC platform, answer these three questions in writing:
- Which specific agency or agency customer is this for? Not "the federal market." A named customer or program.
- What is the categorization of the data they will put in our system? Low, Moderate, or High — derived from FIPS 199 confidentiality, integrity, and availability impact.
- What is the authorization path? Agency ATO, or FedRAMP PMO Joint Authorization Board (JAB) — they have different timelines and different politics.
If you can't answer all three cleanly, you're not ready to pick a baseline. You're ready for a readiness assessment.
Want us to walk through your specific situation? Book a discovery call — 30 minutes, no pitch.