Choose SaaS for Email: No Server Management, Full Policy Control
A company wants to migrate its on-premises email system to the cloud. They require a solution where the cloud provider manages the email servers, software updates, security patches, and storage infrastructure, while the company retains control over user accounts, mailbox policies, and email content. Which cloud service model BEST fits these requirements?
Quick Answer
The three major cloud service models split responsibility along different lines, and this question is specifically testing whether you can map a real business requirement to the correct division of labor. The company wants the provider to handle everything about running the email system itself, including the servers, software updates, security patches, and storage, while keeping only the application-level administrative tasks, like managing user accounts, mailbox policies, and the actual email content, for themselves. That is the defining split of Software as a Service: the provider owns and operates the entire technology stack beneath the application, and the customer interacts only with the finished, ready-to-use application and its administrative settings. This is different from Infrastructure as a Service, where the customer would still be responsible for managing the operating system and installed software, and different from Platform as a Service, which would leave the customer managing a custom application built on top of a managed runtime rather than using a complete, pre-built product like email. Whenever a scenario describes a company wanting a fully finished, ready-to-use application where the provider takes care of all underlying maintenance and the customer only manages user-facing settings and data, that division of responsibility is the signature of Software as a Service.
⚠ Common exam trap
The 220-1101 exam often tests the misconception that any service where the customer manages users and policies must be IaaS or PaaS, but the key differentiator is who manages the application and its underlying infrastructure—in SaaS, the provider manages everything except application-level configuration.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Software as a Service (SaaS)
Software as a Service (SaaS) delivers a complete, managed application to end users. In this scenario, the cloud provider handles all underlying infrastructure, including email servers, software updates, security patches, and storage, while the customer retains administrative control over user accounts, mailbox policies, and email content. This matches the definition of SaaS, where the provider manages the entire application stack and the customer only manages application-level settings.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Infrastructure as a Service (IaaS)
Why it's wrong here
IaaS provides raw compute, storage and networking, so the customer still patches the OS and mail software. The stem requires the provider to manage servers, updates and security patches, which is SaaS. IaaS fits when you need control of the operating system and application stack.
When this WOULD be correct
A company wants to migrate its on-premises email system to the cloud but needs full control over the operating system, email server software, and configurations, while still benefiting from cloud infrastructure. They are willing to handle updates and patches themselves.
- ✗
Platform as a Service (PaaS)
Why it's wrong here
PaaS supplies runtimes and middleware for deploying your own code, leaving the application itself to the customer. The stem needs provider-managed email servers, updates and storage with tenant-controlled mailboxes, which is SaaS. PaaS fits custom application development, not consuming a finished mail service.
When this WOULD be correct
A company wants to develop a custom email application and deploy it in the cloud without managing the underlying OS or runtime environment, but they need to handle the application code and data themselves.
- ✓
Software as a Service (SaaS)
Why this is correct
SaaS delivers fully managed email applications where the provider handles servers, patching, updates and storage, satisfying the infrastructure-management constraint. The company still administers user accounts, mailbox policies and content through the application's own administrative controls, matching the retained-control requirement without needing to manage any underlying platform or operating system.
- ✗
Desktop as a Service (DaaS)
Why it's wrong here
DaaS streams virtual desktops from the cloud; it delivers no mail server or mailbox service. The stem requires provider-managed email servers with tenant-controlled accounts and policies, which is SaaS. DaaS fits when users need hosted virtual desktop sessions rather than email.
When this WOULD be correct
A company needs to provide remote employees with virtual Windows desktops that include pre-installed productivity software, while the cloud provider manages the underlying VMs, OS updates, and security. The company only manages user access and application policies.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 220-1101 exam frequently reuses these exact scenarios with slightly different constraints.
✓Software as a Service (SaaS)Correct answer▾
Why this is correct
SaaS delivers fully managed email applications where the provider handles servers, patching, updates and storage, satisfying the infrastructure-management constraint. The company still administers user accounts, mailbox policies and content through the application's own administrative controls, matching the retained-control requirement without needing to manage any underlying platform or operating system.
✗Infrastructure as a Service (IaaS)Wrong answer — click to see why▾
Why this is wrong here
IaaS provides virtualized computing resources like servers and storage, but the customer is responsible for managing the email software, updates, and security patches. The requirement for the cloud provider to manage these aspects points to a higher-level service model.
★ When this WOULD be the correct answer
A company wants to migrate its on-premises email system to the cloud but needs full control over the operating system, email server software, and configurations, while still benefiting from cloud infrastructure. They are willing to handle updates and patches themselves.
Why candidates choose this
Candidates may confuse IaaS with the ability to run their own email server in the cloud, overlooking that the question specifies the provider manages software updates and security patches, which is not typical for IaaS.
✗Platform as a Service (PaaS)Wrong answer — click to see why▾
Why this is wrong here
PaaS provides a platform for developing and deploying applications but does not include the email application itself; the company would still need to install and manage email software, which contradicts the requirement for the provider to manage the email servers and software.
★ When this WOULD be the correct answer
A company wants to develop a custom email application and deploy it in the cloud without managing the underlying OS or runtime environment, but they need to handle the application code and data themselves.
Why candidates choose this
Candidates may confuse PaaS with SaaS, thinking that PaaS includes ready-to-use applications, or they may believe that email systems are typically built on platforms rather than consumed as services.
✗Desktop as a Service (DaaS)Wrong answer — click to see why▾
Why this is wrong here
DaaS delivers virtual desktops, not email services. The question specifically requires a cloud-based email system with managed servers and software, which is a SaaS characteristic, not a desktop virtualization service.
★ When this WOULD be the correct answer
A company needs to provide remote employees with virtual Windows desktops that include pre-installed productivity software, while the cloud provider manages the underlying VMs, OS updates, and security. The company only manages user access and application policies.
Why candidates choose this
Candidates may confuse DaaS with SaaS because both are managed services, or they might think 'Desktop as a Service' includes email applications like Outlook, but DaaS provides the desktop environment, not the email service itself.
Analysis generated from the official 220-1101blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
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Same concept, more angles
5 more ways this is tested on 220-1101
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company wants to migrate its on-premises email server to the cloud. The IT director insists that the new solution require no management of the underlying operating system, application server, or patching. Which cloud service model should the organization choose?
medium- A.Infrastructure as a Service (IaaS)
- B.Platform as a Service (PaaS)
- ✓ C.Software as a Service (SaaS)
- D.Desktop as a Service (DaaS)
Why C: Software as a Service (SaaS) provides a fully managed application delivered over the internet. The provider handles all underlying infrastructure, operating system, application server, and patching, meeting the IT director's requirement for zero management of those layers. In this scenario, the email service is consumed as a ready-to-use application, such as Microsoft 365 Exchange Online or Google Workspace.
Variation 2. A company wants to move its on-premises email server to the cloud. The goal is to eliminate all management overhead related to the operating system, security patches, and the email application itself. The IT team needs the email service to be highly available and automatically scalable. Which cloud service model BEST meets these requirements?
medium- A.A. Infrastructure as a Service (IaaS)
- ✓ B.B. Software as a Service (SaaS)
- C.C. Platform as a Service (PaaS)
- D.D. Desktop as a Service (DaaS)
Why B: Software as a Service (SaaS) delivers a fully managed email application over the internet, where the provider handles all underlying infrastructure, operating system, security patches, and application updates. This model eliminates all management overhead for the IT team while offering built-in high availability and automatic scalability, as seen with services like Microsoft 365 Exchange Online or Google Workspace.
Variation 3. A company wants to migrate its on-premises email system to the cloud. The IT team wants to avoid managing the underlying server hardware and email software, but they require the ability to configure custom email policies, create user accounts, and manage distribution groups. Which cloud service model best meets these requirements?
medium- A.Infrastructure as a Service (IaaS)
- B.Platform as a Service (PaaS)
- ✓ C.Software as a Service (SaaS)
- D.On-premises deployment
Why C: Software as a Service (SaaS) delivers a fully managed email application (e.g., Microsoft 365 Exchange Online) where the provider handles all underlying hardware, OS, and email software. The customer retains administrative control to configure custom email policies, create user accounts, and manage distribution groups via a web console or PowerShell, without any server or software maintenance.
Variation 4. A company wants to move its email system to the cloud. The IT team wants to avoid managing the underlying servers and email software but needs full administrative control over email settings, user accounts, and security policies. Which cloud service model should the company choose?
easy- A.Infrastructure as a Service (IaaS)
- B.Platform as a Service (PaaS)
- ✓ C.Software as a Service (SaaS)
- D.Desktop as a Service (DaaS)
Why C: Software as a Service (SaaS) delivers the email application over the internet, with the provider managing the underlying servers, operating systems, and email software. This model allows the company to avoid server and software management while retaining full administrative control over email settings, user accounts, and security policies through the application's management interface. Examples include Microsoft 365 Exchange Online and Google Workspace.
Variation 5. A company wants to move its email system to the cloud. The IT team wants to avoid managing physical servers and applying software updates, but they need full control over email policies, user accounts, and security settings. Which cloud service model BEST meets these requirements?
medium- A.Infrastructure as a Service (IaaS)
- B.Platform as a Service (PaaS)
- ✓ C.Software as a Service (SaaS)
- D.Desktop as a Service (DaaS)
Why C: SaaS is the correct choice because it delivers the email application as a fully managed service, eliminating the need for the IT team to manage physical servers or apply software updates. At the same time, SaaS solutions like Microsoft 365 or Google Workspace provide granular administrative controls for email policies, user accounts, and security settings through web-based portals, meeting the requirement for full control without infrastructure management.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 220-1101 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 220-1101 exam.