SOC 2ISACA / NIST / SOC 2cisaVerified 2026-11-12

SOC 2: Software Acquisition: An IS Auditor's Guide to Vendor Selection and Risk Management

Authoritative Rule Summary (SOC 2)

Under SOC 2 (ISACA / NIST / SOC 2), software Acquisition: An IS Auditor's Guide to Vendor Selection and Risk Management establishes the authoritative rules tested on the ISACA CISA. Learn the IS auditor's critical role in the software acquisition lifecycle. VoraPrep verifies every threshold, worked table, and practice question below against the current ISACA CISA blueprint.

Worked Example: Weighted Scoring for Vendor Evaluation

CriteriaWeight
Functional Fit (HIPAA compliance features)30%
Technical Security (Encryption, IAM)25%
Vendor Viability (Financials & SOC 2 Report)20%
Implementation Support15%
Total Cost of Ownership (TCO)10%
Test Yourself on SOC 2 in 30 Seconds (No Login)ISACA CISA · medium

A global manufacturing firm is selecting a new Enterprise Resource Planning (ERP) system via a Request for Proposal (RFP). The IS auditor is part of the project steering committee and is tasked with recommending the most appropriate method for evaluating vendor submissions. To ensure a transparent, objective, and risk-based selection, which of the following evaluation methods should the IS auditor recommend as the MOST effective?

Worked Practitioner Scenario

Worked Example: Weighted Scoring for Vendor Evaluation

Scenario. A healthcare provider needs a new patient portal and has received proposals from Vendor A and Vendor B. The IS auditor is reviewing the selection committee's evaluation worksheet.

  1. Step 1: Define and Weight Criteria The committee established the following criteria and weights based on risk and strategic importance:
  2. | Criteria | Weight | | :--- | :--- | | Functional Fit (HIPAA compliance features) | 30% | | Technical Security (Encryption, IAM) | 25% | | Vendor Viability (Financials & SOC 2 Report) | 20% | | Implementation Support | 15% | | Total Cost of Ownership (TCO) | 10% |
  3. Step 2: Score Vendors (on a 1-5 scale) After demos and due diligence, the team scored each vendor:
  4. | Criteria | Vendor A Score | Vendor B Score | | :--- | :--- | :--- | | Functional Fit | 5 | 4 | | Technical Security | 3 | 5 | | Vendor Viability | 4 | 3 | | Implementation Support | 5 | 4 | | TCO | 2 | 5 |
The tempting-but-wrong answer would be to choose Vendor A because it has the highest score for 'Functional Fit'. While functionality is important, the CISA mindset requires a holistic risk assessment. Ignoring Vendor A's lower security score and higher TCO would be a critical failure in due diligence. The weighted scoring process is designed specifically to prevent a single, appealing factor from overriding a more comprehensive risk analysis.
Exam Watchouts & Statutory Boundaries

Common ISACA CISA Distractors on SOC 2

  • 1Use this framework to dissect any CISA question about acquiring software.
  • 2Step 1. Identify the stage of the acquisition process. Is the question about the initial build-vs-buy decision, the RFP phase, vendor evaluation, or post-contract controls? The correct action depends entirely on the context.
  • 3Step 2. Determine the IS auditor's primary concern at that stage. Early on, the concern is a fair and objective process. During evaluation, it's about comprehensive due diligence. Post-selection, it's about contractual protections and ongoing monitoring.
  • 4Step 3. Prioritize risks over features. CISA answers always favor the choice that best manages long-term risk (e.g., vendor viability, security posture) over short-term benefits (e.g., a flashy user interface, a slightly lower price).
  • 5To remember the key dimensions of vendor evaluation, use the FIST-V mnemonic:

Frequently Asked Questions: SOC 2

What is the core rule under SOC 2 (Software Acquisition: An IS Auditor's Guide to Vendor Selection and Risk Management)?

Under SOC 2 (ISACA / NIST / SOC 2), software Acquisition: An IS Auditor's Guide to Vendor Selection and Risk Management establishes the authoritative rules tested on the ISACA CISA. Learn the IS auditor's critical role in the software acquisition lifecycle. VoraPrep verifies every threshold, worked table, and practice question below against the current ISACA CISA blueprint.

How is SOC 2 tested on the ISACA CISA?

Use this framework to dissect any CISA question about acquiring software. Step 1. Identify the stage of the acquisition process. Is the question about the initial build-vs-buy decision, the RFP phase, vendor evaluation, or post-contract controls? The correct action depends entirely on the context.

Where can I practice ISACA CISA questions on Software Acquisition: An IS Auditor's Guide to Vendor Selection and Risk Management?

Test yourself instantly with the free playable ISACA CISA question on this page, or launch VoraPrep's full ISACA CISA adaptive question bank, interactive lessons, and 1:1 exam simulator at voraprep.com/cisa.

Master SOC 2 Across the VoraPrep Platform

Related Statutory & Regulatory Rules

All Rules →