Written by:
Editorial Team
DSG.AI
Compliance-as-a-Service for mid-market companies looks simple on paper: pay a monthly fee, get your ISO 27001, SOC 2, or GDPR obligations handled. In practice, most CaaS contracts deliver a platform and a task list, not a compliance function. The gap between what vendors sell and what mid-market buyers actually receive costs time, audit failures, and the cost of switching providers mid-cycle.
This checklist covers what to evaluate before signing. It is written for companies between 50 and 500 employees with compliance obligations that exceed startup tooling but don't justify a full in-house team.
Define What You Actually Need First
Mid-market companies in compliance conversations typically fall into one of three situations. Misidentifying yours will land you with the wrong vendor.
Situation 1: First framework adoption. You need ISO 27001 or SOC 2 Type II certification for the first time. This requires building a compliance program, not just tracking one. Most CaaS platforms assume you already have policies, controls, and an evidence cadence in place.
Situation 2: Continuous compliance maintenance. You achieved certification and now need to maintain it across annual audit cycles. Evidence collection, control testing, and policy updates are the primary work. Software-led CaaS is designed for this situation.
Situation 3: AI governance requirements. Regulated industries, EU AI Act exposure, or enterprise customer requirements now demand documented AI management. This requires assessments and documentation for AI systems on top of standard frameworks. Few CaaS vendors have mature AI governance programs.
Know your situation before evaluating vendors. The shortlist changes for each one.
The Six Evaluation Categories
1. Software vs. Service: Who Does the Work?
This is the first filter. Ask each vendor directly: who performs the compliance work?
Some CaaS vendors provide a platform and expect your team to operate it. Others deliver compliance outcomes: gathering evidence, running control assessments, drafting policies, and preparing you for external audit. The pricing can look similar from the outside.
Ask:
- How many hours of human work does your team contribute per month for a company our size?
- What are the deliverables, not the features?
- Who handles evidence collection for our AWS, GCP, or Azure environments?
If the answers lean on "the platform does that," you are evaluating software-as-a-service with compliance branding, not a managed compliance function. Neither is wrong, but they solve different problems. See what compliance-as-a-service actually includes for a detailed breakdown of where vendor scope typically ends.
2. Framework Coverage: Check Depth, Not Breadth
CaaS vendors market support for 20-plus frameworks. Depth varies enormously.
| Framework | What to verify |
|---|---|
| ISO 27001 | Ask whether they cover the 2022 revision (93 controls, updated from the 114-control 2013 standard). Many vendor platforms still map to the old structure. |
| SOC 2 Type II | Type I is a point-in-time opinion. Type II covers 6-12 months of operational evidence. Confirm which they support and what the audit timeline looks like. |
| GDPR / DORA | Confirm a human reviews your data flows and processing records, not just a questionnaire template. |
| EU AI Act | If you deploy AI systems, ask specifically how they document conformity assessments and the required technical documentation under Article 11. Most vendors are building this capability, not shipping it. |
| PCI DSS 4.0 | The 2024 update introduced a customized approach for compensating controls. Confirm versus template-only support. |
Request a sample deliverable from a current client with a similar framework. A capable vendor has real policy documents, evidence sets, and audit reports to show. A template vendor has blank forms.
3. Evidence Collection: Integration Coverage Determines Actual Labor
Evidence collection is 40-60% of the labor in any compliance program. The difference between a vendor with native integrations for your stack and one without is measured in hours per week of your team's time.
Ask:
- Which systems does the platform connect to directly (AWS, Azure, GCP, Okta, GitHub, Jira, Slack, Salesforce)?
- What evidence still requires manual collection, and who does it?
- How does the platform handle systems you do not integrate with (legacy apps, on-premises infrastructure, non-integrated SaaS)?
A vendor with 20 integrations covering your core stack differs materially from one with 20 generic connectors. Get a list and map it against your environment before evaluating anything else.
4. Audit Readiness: What Happens in the Week Before the Audit?
A compliance program that breaks down under auditor scrutiny costs more than it saved in monthly fees. Ask what the vendor does during audit fieldwork, not just in preparation.
- Do you have relationships with specific audit firms, and is there a fee advantage for your clients?
- What does your team do in the 30 days before an external audit, and during audit fieldwork itself?
- What is the typical finding rate for your clients (how many audit findings do they receive on control deficiencies)?
Vendors with formal partnerships with audit firms can often reduce external audit costs by 15-30% through familiarity. Independent vendors are also fine, but understand what you give up.
5. Pricing: Total Cost, Not Platform Fee
CaaS pricing models differ significantly, and the gap between them widens at mid-market scale.
| Model | What it means | Where it fits |
|---|---|---|
| SaaS platform only | Annual license; your team operates it | Works if you have internal compliance staff to run it |
| Platform plus advisory hours | License plus a bank of consulting hours, typically 20-50/year | Common mid-market entry model; confirm how hours roll over |
| Managed compliance retainer | All-in monthly fee; vendor team does the work | Highest cost, lowest internal burden; best for situation 1 and situation 3 |
| Outcome-based | Fixed price per certification completion or audit cycle | Best for first-time certifications; verify scope very carefully |
Get a fully-loaded cost comparison. This means: platform fee, plus internal hours your team will spend operating the program, plus external audit fees. For context, Big 4 co-sourcing rates for compliance work typically run $300-600 per hour at manager level; a competent managed-compliance vendor runs 40-60% lower for equivalent coverage. See our internal audit sourcing cost reference for current market rates by provider tier.
Ask about renewal pricing. Implementation work bundled into year-one contracts often disappears in year-two renewals while the fee stays the same.
6. AI Feature Claims: Verify Against a Real Control
Most CaaS vendors now market AI-driven compliance. The feature descriptions are often identical; the implementations are not.
Ask what the AI actually does on a specific control:
- Evidence classification: Does AI categorize uploaded evidence automatically, or does a human review each upload?
- Gap detection: Does AI flag missing controls, or does it generate a templated risk matrix for a human to interpret?
- Agentic claims: If the vendor offers "autonomous compliance monitoring," request a live demonstration on one of your actual controls, not a demo tenant.
The ISO 42001 standard exists specifically for AI management systems. If a vendor's AI features aren't themselves documented to a management standard, that is information worth having before signing.
What a Capable CaaS Vendor Looks Like at Mid-Market Scale
For a 100-300 person company, a competent managed-compliance vendor:
- Delivers a documented compliance program, not just platform access
- Has native integrations covering at least 80% of your core tech stack
- Names specific audit partners or can estimate audit fee reductions
- Provides a dedicated point of contact, not a shared support queue
- Shows real prior deliverables (policies, evidence sets, completed audit reports) from companies with a similar profile and framework
- Can explain, specifically, what your team does versus what their team does
For companies in situation 1 entering compliance for the first time, also evaluate Audit-as-a-Service as an alternative. AaaS delivers compliance outcomes on a subscription model and is often better suited to first-certification engagements than software-led CaaS. The distinction between AaaS and outsourcing matters here: AaaS delivers outcomes; outsourcing delivers hours. For co-sourcing comparisons, see co-sourcing vs. outsourcing internal audit.
The Buyer's Checklist
Before signing a CaaS contract, confirm each of these:
- Clear answer to "who does the work" in this contract
- Framework coverage matches your 2026 obligations (ISO 27001:2022, SOC 2 Type II, GDPR, EU AI Act as applicable)
- Native integrations cover at least 80% of your tech stack
- Audit readiness support is included, not billed separately
- Fully-loaded cost comparison (platform fee plus internal hours plus audit fees) against at least one alternative model
- AI feature claims demonstrated on a real control, not a product walkthrough
- Reference call with a current client at similar company size and framework scope
A vendor that cannot answer every item on this list with specifics is telling you something. The best-run compliance programs are built on clear scope agreements. Ambiguity in the sales cycle becomes dispute in the renewal cycle.
Sources:
- ISO/IEC 27001:2022 (93-control structure, updated from 2013): https://www.iso.org/standard/27001
- AICPA SOC 2 overview: https://us.aicpa.org/interestareas/frc/assuranceadvisoryservices/sorhome
- EU AI Act, Article 11 (technical documentation requirements): https://digital-strategy.ec.europa.eu/en/policies/regulatory-framework-ai
- DSG.AI internal audit sourcing cost data: /blog/internal-audit-sourcing-cost-reference
