We group the main types of cloud security into posture management (CSPM), workload protection (CWPP), software as a service (SaaS) access control (CASB) and the joined-up platform (CNAPP). In this guide, cloud security solutions means the tools and services that look at a firm’s cloud settings, workloads and SaaS use. The title names three; CASB joins them because question 3 below asks about SaaS use. This guide is for an IT manager or security lead at a firm in India or the GCC. You may have heard these acronyms from suppliers, and you now have to decide what to look at first. It compares categories, then ends in a four-question rule. We don’t rank products here, and the guide names none.
Last reviewed 2026-11-01 by Manish Sharma.
Cloud Security Solutions in Short: Four Categories, One Rule
Cloud security solutions fall into four categories in this guide. Each of these types of cloud security answers its own question about your cloud, such as what runs inside a workload. The one-line descriptions below are working descriptions for this guide, rather than standard definitions. The questions, their order and the rule at the end are also our own method, not a CISA, NCSC or NIST standard.
Key Takeaway Each category answers its own question about your cloud, rather than being a standard product shape.
This guide ranks no product, compares no costs and names no supplier. It helps you choose a category and put better questions to a supplier.
Cloud Security Solutions for the Platform: CSPM and CWPP
Posture management looks at configuration, and the question it answers is whether your cloud accounts match what you meant. A report covers only what you give the tool to look at. For the longer explanation, see how posture management works.
Workload protection looks at workloads, such as a virtual machine, a container or a serverless function, and the question it answers is whether you can see what is running inside one. Because no source we read defines CWPP, treat this as our working description.
A quiet report can mean nothing is wrong, but it can also mean the tool can’t see an account or a workload. Ask what you have connected before you trust the quiet.
Cloud Security Solutions for SaaS and Joined-Up Findings: CASB and CNAPP
Cloud security solutions for SaaS use and for joined-up findings differ in what they look at. Our working description of a CASB is that it looks at SaaS: an application the provider runs for you. That follows NIST’s definition of the service models, dated September 2011, which we use for that definition only. The question it answers is which SaaS applications people use and what data goes into them. For more, see how a CASB works.
A CNAPP is one of the types of cloud security that joins others. Our working description is that it reads the posture view and the workload view side by side. The question it answers is whether one joined view is easier to act on than two separate ones. Before you compare, ask a supplier what its product includes and which accounts and workloads it needs connected. For the parts, see what a CNAPP includes.
Why the Names Mean Different Things to Different Suppliers
Treat each acronym as a question to put to a supplier, rather than as a fixed shape of product. CISA’s Cloud Security Technical Reference Architecture, version 2 from June 2022, is written for US federal agencies. It says the term CSPM is “defined differently by various entities” and that this leaves some ambiguity. CISA now labels that page archived content that may not reflect current policy. This article uses it only for that point and for CISA’s own meaning of CSPM. The same care applies to the other types of cloud security in this guide: that document does not define CWPP or CNAPP, and we found no standard that does. Its reference list also includes a 2021 analyst paper whose title names CSPM, CWPP, CNAPP and CASB together. The rule below asks what any of these cloud security solutions covers before it asks for a name.
| Category | What the sources say | What to ask when you meet a supplier |
|---|---|---|
| CSPM | CISA defines it as a continuous monitoring process, but notes that others define it differently. | Which cloud accounts are connected, if any are left out? |
| CWPP | Not defined in the sources we read, although CISA’s reference list names it in one title. | Which workloads does it look inside, for example virtual machines or containers? |
| CASB | CISA’s glossary defines it as a tool that manages access to secure data, while our working description is about SaaS use. | Which SaaS applications does it see, as well as which data? |
| CNAPP | Not defined in the sources we read, although CISA’s reference list names it in one title. | What does the product include, if it joins several views? |
Cloud Security Solutions: A Four-Question Decision Rule
Answer the four questions in order. When you choose where to start, begin with the first question you can’t answer. The rule is Signisys’ own.
Can you list today which settings are wrong and who can reach what? If you can’t, look at posture management first.
Can you see what happens inside your production workloads while they run? If you can’t, add workload protection.
Can you list the SaaS applications staff use and what data goes into them? If you can’t, look at a CASB.
Does one person read your tools’ findings together and act on them? If tools report separately and nobody joins them, a CNAPP may earn a place. If nobody acts, name an owner before you buy anything.
Advantages
Limitations
Key Takeaway Start with the first question you can’t answer, and name an owner for the findings before you buy.
Question 1 is the reach question from our guide to who can reach it, who can change it and who owns it. Identity, logging and detection are separate categories this guide leaves out, and an ordered set of ten steps for a cloud platform starts with workspaces and sign-ins.
What to Ask a Supplier, and What This Guide Leaves Out
Ask any supplier three questions. What exactly does it cover, and what does it need from my accounts and logs? Which accounts, workloads and log sources did you give it? Who will act on its findings?
Buying cloud security solutions does not remove your own duty to configure the service. The NCSC’s guidance on using cloud services securely, reviewed 7 June 2023, addresses UK security professionals and large, small and medium organisations. It says you keep some responsibility to configure and use a cloud service. The amount varies with the shared responsibility model and the service’s security by design and by default.
This guide covers the types of cloud security rather than products. It leaves out identity management, detection and response, data protection, penetration testing, costs, and Indian or GCC rules. For the basics, see the basics of cloud security and identity and access management. For setting-by-setting AWS or Azure checks, see our checks for individual cloud settings, and for a wider audit see a six-domain audit list for leaders. The route to a secured workload is on the page for securing cloud infrastructure and workloads.
Signisys helps organizations find, prioritize and reduce security risks, with clear visibility of security posture and compliance. Signisys offers these services, set out in our VAPT and Cybersecurity Risk Assessment solution and our Cybersecurity Services page. The decisions on each finding stay with your own team.
Cloud Security Solutions FAQ
What are cloud security solutions?
What are the main types of cloud security?
Is a CNAPP better than separate CSPM and CWPP tools?
Which category should a mid-size firm start with?
Do cloud security solutions replace a security review?
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