--- title: "DaaS vs SaaS: what desktop as a service adds to the cloud stack" description: "Desktop as a service rents you a whole cloud desktop; SaaS rents you one application. Where DaaS fits next to IaaS, PaaS and SaaS, with AWS prices worked through." canonical: "https://saascron.com/daas-vs-saas/" language: "en-US" author: "Ricardo Machado" author_url: "https://saascron.com/author/ricardo-machado/" published: "2026-10-23T12:00:00-04:00" updated: "2026-10-23T12:00:00-04:00" category: "Cloud Models" tags: ["Cloud computing", "DaaS", "Virtual desktop", "SaaS fundamentals"] --- # DaaS vs SaaS: what desktop as a service adds to the cloud stack > Desktop as a service rents you a whole cloud desktop; SaaS rents you one application. Where DaaS fits next to IaaS, PaaS and SaaS, with AWS prices worked through. Your staff work from laptops you do not control, a contractor needs a Windows machine for three months, or an old desktop application has no web version. Someone suggests "DaaS", and you need to know how it differs from the SaaS tools you already pay for. Desktop as a service (DaaS) rents you a complete Windows desktop that runs in a provider's data center; software as a service (SaaS) rents you one application. The two solve different problems, and they often run side by side. This guide places DaaS in the cloud stack, shows who manages what, works through real prices from one provider and clears up the second meaning of the acronym. For the basics of SaaS itself, see [What is SaaS?](https://saascron.com/what-is-saas/). ## DaaS in plain terms Think of it like the difference between renting a furnished office and using a print shop. The furnished office comes with a desk, a chair, a computer and a filing cabinet, and you arrange it as you like. The print shop does one job for you, and you never touch its machines. DaaS is the furnished office. You get a whole desktop: an operating system, a start menu, files and any applications you install. You reach it from a laptop, a tablet or a browser, but the desktop itself runs on the provider's servers. SaaS is the print shop: one application, such as email or a CRM, that the vendor runs and updates for you. ## Where DaaS sits in the cloud stack A widely cited reference for cloud service models is NIST Special Publication 800-145, "The NIST Definition of Cloud Computing", published in September 2011. It names three service models: infrastructure as a service (IaaS), platform as a service (PaaS) and SaaS ([NIST SP 800-145](https://csrc.nist.gov/pubs/sp/800/145/final)). DaaS is not one of them. It is a packaged offering that providers built later, on top of the same layers. How DaaS is described depends on how much the provider runs: - **Microsoft Windows 365** calls itself "a cloud-based software-as-a-service (SaaS)" that creates Cloud PCs, one Windows virtual machine per user. It is sold "as a separate license per user for a fixed monthly fee" ([Microsoft Learn, What is Windows 365?](https://learn.microsoft.com/en-us/windows-365/overview)). The Business edition is for companies of up to 300 seats. - **Azure Virtual Desktop** runs in your own Azure subscription. Microsoft's documentation says you "only manage the image and virtual machines you use for the sessions", not the gateway and broker roles ([Microsoft Learn, What is Azure Virtual Desktop?](https://learn.microsoft.com/en-us/azure/virtual-desktop/overview)). That is closer to IaaS with a managed control plane. - **Amazon WorkSpaces** offers both persistent personal desktops and shared pools, billed monthly or by the hour ([AWS WorkSpaces pricing](https://aws.amazon.com/workspaces/desktop-as-a-service/pricing/)). So DaaS is not a fourth layer with a fixed place. It is a product type that can look like SaaS or like IaaS, depending on who manages the virtual machines. For the line between the three NIST models, see [SaaS vs PaaS](https://saascron.com/saas-vs-paas/). ## Who manages what The table compares a SaaS application with the two ends of the DaaS range. It is assembled from the documentation above; check your provider's own shared-responsibility page before you sign. | Layer | SaaS application | DaaS, fully managed (Windows 365 style) | DaaS, self-managed (Azure Virtual Desktop style) | |---|---|---|---| | Data center, servers, network | Vendor | Provider | Provider | | Virtual machines | Vendor | Provider, created automatically per license | You | | Desktop image | Not applicable | Provider's image, or your own on Enterprise | You | | Applications installed on the desktop | Not applicable | You | You | | The application itself | Vendor | You (or its own SaaS vendor) | You (or its own SaaS vendor) | | Users, access and data | You | You | You | The bottom row never moves. In every model, you decide who has access and you own your data. The table shows the main trade: DaaS hands you a whole computer to manage remotely, while SaaS hands you a finished application. ## Worked example: personal desktops vs a shared pool on AWS AWS publishes worked pricing examples for its US West (Oregon) Region on the WorkSpaces pricing page (checked October 17, 2026). Two of them: - A Windows Standard **personal** desktop at a fixed $44 per month (AlwaysOn billing). - A Standard bundle in **WorkSpaces Pools** at $0.10 per hour, plus a Remote Desktop Services Subscriber Access License (RDS SAL) fee of $4.19 per user per month. A personal desktop keeps the user's machine and settings between sessions. A pool hands out a fresh desktop from a shared set, so it suits staff who use the same few applications and keep files elsewhere. **Example:** a team of 25 people, each using a cloud desktop for 140 hours a month (about seven hours a day on 20 working days). The hours are an assumption; the prices are AWS's examples. | Option | Calculation | Monthly cost | |---|---|---| | Personal desktops, AlwaysOn | 25 x $44 | $1,100 | | Pools, compute | 25 x 140 hours x $0.10 | $350 | | Pools, licenses | 25 x $4.19 | $104.75 | | Pools, total | $350 + $104.75 | $454.75 | At what usage do the two cost the same per user? Solve $4.19 + $0.10 x hours = $44: hours = ($44 - $4.19) / $0.10 = 398.1 hours a month. Below about 398 hours, the pool is cheaper per user in this example. The catch is not the price: a pool is non-persistent, so it fails users who need their own installed software or local settings. Price both on the AWS calculator for your Region before you decide. ## The other DaaS: data as a service The same acronym also stands for data as a service: a provider sells access to a dataset, usually through an API or a scheduled file delivery. Examples of the category include company records, address validation and market prices. Data as a service has nothing to do with desktops. When a vendor or a colleague says "DaaS", ask which one, before anyone writes a budget line. ## Common mistakes 1. **Expecting DaaS to replace your SaaS tools.** A cloud desktop still needs email, a CRM and storage, often bought as separate SaaS. Why it happens: "everything in the cloud" sounds like one purchase. Instead: list the applications that will run inside the desktop and price them separately. 2. **Comparing per-user prices without the usage pattern.** In the example, the same 25 people cost $1,100 or $454.75 a month depending on the billing type. Why it happens: price lists show one number per bundle. Instead: estimate hours per user first, then compare monthly and hourly billing. 3. **Assuming the provider manages everything.** With a self-managed service such as Azure Virtual Desktop, the image and the virtual machines are yours to manage. Why it happens: the word "service" suggests the provider does it. Instead: read the provider's documentation on what you manage, as quoted above. 4. **Forgetting license fees beside compute.** AWS's pool example adds $4.19 per user per month for a Remote Desktop license. Why it happens: hourly compute prices are the headline. Instead: add every per-user license to the comparison. For how Microsoft splits responsibility in its office suite, see [Microsoft 365 as SaaS](https://saascron.com/microsoft-365-saas/). ## Sources - NIST, [SP 800-145, The NIST Definition of Cloud Computing](https://csrc.nist.gov/pubs/sp/800/145/final), September 2011. - Microsoft Learn, [What is Windows 365?](https://learn.microsoft.com/en-us/windows-365/overview) and [What is Azure Virtual Desktop?](https://learn.microsoft.com/en-us/azure/virtual-desktop/overview), checked October 2026. - AWS, [Amazon WorkSpaces pricing](https://aws.amazon.com/workspaces/desktop-as-a-service/pricing/), pricing examples for US West (Oregon), checked October 2026. ## In three sentences Desktop as a service rents you a whole cloud desktop that you manage remotely, while SaaS rents you one finished application that the vendor runs. DaaS is not one of NIST's three service models: fully managed products such as Windows 365 describe themselves as SaaS, while Azure Virtual Desktop leaves the virtual machines to you. With AWS's Oregon examples, 25 personal desktops cost $1,100 a month and a 140-hour shared pool $454.75, so estimate usage hours before you choose. --- Canonical: