SIG Lite vs CAIQ: which one to fill in first (and how to reuse the answers)
Franklin Lupichuk, founder of Rendro · Nov 5, 2026 · 3 min read
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Two customers, two standards: one sent a SIG Lite and another asked for a CAIQ. Or one buyer has asked for "whichever you have". Both are common, both cover the same ground in different wording, and you don't need to answer them from scratch twice. Here is how they differ and a sensible order.
A caveat first: if a customer sent you a specific file, that is the one they will read, so you can't swap it for another standard. This guide is about the order you work in and the reuse between them.
SIG Lite and CAIQ side by side
| SIG Lite | CAIQ | |
|---|---|---|
| Published by | Shared Assessments | Cloud Security Alliance (CSA) |
| Typically sent by | Banks, insurers and larger companies | Buyers of cloud and SaaS services |
| Where to get it | Licensed; you usually receive the file from the customer | Free to download from the [CSA CAIQ page](https://cloudsecurityalliance.org/research/topics/caiq) |
| Format | Structured spreadsheet covering many risk areas | Spreadsheet mapped to the CSA Cloud Controls Matrix |
| Shorter version | SIG Lite is itself the shorter form of the SIG | CAIQ-Lite |
Question counts change between yearly versions, so go by the file you received rather than a number you read online. The details are in our guides to the SIG Lite and the CAIQ, including which CAIQ version you have.
Which one to fill in first
Use these rules in order:
- **The nearest real deadline.** A deal that is waiting this week beats one that is next month.
- **The bigger deal, if deadlines are close.** Send the one tied to the larger contract first.
- **The one with the stricter format.** If one file has dropdowns, evidence columns or an instructions tab that must be followed exactly, do it while you are fresh.
- **If nothing separates them, start with the CAIQ.** It focuses on cloud and SaaS controls and is a clean way to produce a first set of approved answers. This is a working preference, not a rule, so ignore it if your situation says otherwise.
Whichever you pick, finish and get it reviewed before starting the other. Two half-finished files in parallel is how contradictory answers get sent.
How to reuse answers between them
The topics line up closely: governance and policies, access control, encryption, incident response, vendor management, business continuity, privacy. After the first file, make a simple mapping, one row per topic, with your approved answer and the document behind it.
Two rules keep reuse safe:
- **Read the question, not just the topic.** "Do you encrypt data at rest?" and "Do you manage customer-held keys?" sit in the same area and have different answers.
- **Keep one source of truth.** Facts like the hosting region, log retention period and number of subprocessors should be written once and quoted the same way in both files.
Where one standard asks something the other doesn't, treat it as a new question and answer from your documents. If you have no document to point to, that is a gap: say so honestly, with what you do instead. See answers that invite follow-up questions.
If you have neither yet
Don't download a CAIQ to get ahead unless a customer asks; answer the one in front of you. But if you want a bank of ready wording, the free starter kit is an Excel file of the 50 most common security questions with how to answer each, and the 50 common questions guide has the same style of examples. Both are for adapting, not pasting: use your own facts.
Where Rendro helps
Rendro drafts answers in the buyer's own Excel file, only from your own documents, shows the source for each, and marks what it can't support as Needs review. Approved answers go into an Answer Library, so the second questionnaire starts from the first, which is the reuse this guide describes. You still review every answer.
To see it on the questionnaire in front of you: send us the blank file and we'll fill in the first 25 questions free within 48 hours. Get the free 25-answer sample (blank questionnaire only, never confidential documents). To draft the whole file, start the 14-day free trial (work email, no card). Rendro doesn't work inside web portals, so it fits best when the buyer sends a file.