Cloud Computing Services for Small Business: What You Need, Costs and Setup

What is the difference between SaaS, PaaS and IaaS?

The three models differ in how much the provider runs for you.

• SaaS (software as a service): a finished application you log into, such as Microsoft 365 or an accounting system. The provider runs everything; you manage users and data.
• PaaS (platform as a service): a managed platform for your own code or database, such as a managed database or app hosting service. You manage the application; the provider runs the servers and operating system.
• IaaS (infrastructure as a service): virtual servers, storage and networks on AWS, Azure or Google Cloud. You manage the operating system, patches and software; the provider runs the hardware.

Small businesses get the most value from SaaS because it removes the most work. IaaS makes sense when you run software that has no SaaS version, or need to host a product you sell.

How much do cloud services cost a small business?

There are two pricing models, and most small businesses use both.

• Per user per month for SaaS. Cost grows with headcount and is easy to budget. Watch for plan tiers: security features such as device management are often only in the higher plans.
• Pay as you go for infrastructure. You pay for compute hours, storage and data transfer. It is cheap for small or bursty loads and can grow quickly if nobody watches it.

For infrastructure that runs all the time, commitment discounts change the picture. AWS states that Savings Plans can save up to 72% in exchange for a one- or three-year usage commitment. Commit only for the baseline you are sure to use.

Costs that are easy to miss

• Data transfer out of a cloud region, which is billed separately from storage.
• Backup of SaaS data, because suite retention is not the same as an independent backup.
• Higher licence tiers needed for security features.
• Idle resources: test servers left running, unattached disks, old snapshots.
• Migration and setup work, whether done by staff or a partner.
• Support plans from the provider, if you want faster answers than the free tier gives.

Three habits keep the bill under control: set budget alerts, tag resources by owner or project, and review licences each quarter to remove leavers and unused add-ons.

Is the cloud secure enough for a small business?

Usually more secure than a server in a back office, but only if you do your part. Under the AWS shared responsibility model, AWS is responsible for security of the cloud (data centres, hardware, the platform), while the customer is responsible for security in the cloud: identities, data, network settings and the software they run. Microsoft and Google use the same split.

The ENISA cybersecurity guide for SMEs sets out 12 steps for small firms. The ones that matter most for cloud services:

1. Turn on multi-factor authentication for every account, starting with administrators.
2. Separate admin accounts from daily-use accounts.
3. Back up independently and test a restore.
4. Keep devices updated and managed, including phones used for work email.
5. Train staff to spot phishing, a common way cloud accounts are taken over.
6. Remove access quickly when people leave.

For EU businesses, check where data is stored and whether the provider offers a data processing agreement under GDPR. All three large providers have EU regions, including in the Nordics.

AWS, Azure or Google Cloud: which suits a small business?

For SaaS, the choice is mostly about your productivity suite. For infrastructure, all three platforms cover typical small-business needs. Practical tie-breakers:

Skills often decide more than features. Choose the platform your staff or partner already knows well.

How do you move a small business to the cloud?

1. List what you have. Users, devices, servers, applications, data locations and who depends on what.
2. Decide per system: replace with SaaS, move as is, or retire. Most small-business servers can be replaced by SaaS.
3. Set up identity first. One account per person with MFA, and admin roles defined.
4. Move email and calendars, then files, then business applications. One step at a time, with a short test before each switch.
5. Set up backup and monitoring before you decommission old hardware.
6. Train users on the new tools, especially file sharing and permissions.
7. Review after 30 and 90 days: licences, costs, access rights and anything people still keep on local drives.

Some businesses keep a local server for a specific machine, regulation or connection reason. That is a hybrid setup, covered in our guide to hybrid cloud for small business.

What problems do small businesses run into with cloud services?

• No owner. The setup is done once and nobody reviews access, licences or cost again.
• Sprawl. Different teams buy their own SaaS tools, and data ends up in places nobody tracks.
• Weak sign-in security. Accounts without MFA are one of the easiest ways in for attackers.
• Internet dependence. If the office connection goes down, so does access. A 4G or 5G backup line is cheap insurance.
• Old systems that do not fit. Legacy software that needs a local server or a specific Windows version takes extra planning.

When should a small business get outside help?

Bring in a partner when the setup needs skills or time you do not have in-house: moving servers, designing security, running backups and monitoring, or controlling cloud spend. Many small businesses use a managed service provider for the ongoing work; see our guide to choosing managed service providers for small business.

A real example: ET Network

ET Network, a digital services company, ran its infrastructure from a single data centre with too little redundancy for a growing customer base, and the goals for availability, security and speed to market were getting hard to meet with in-house resources. Opsio designed and built a multi-AZ AWS architecture with automated provisioning, containerised workloads and security controls, working with the team from project management to testing. The ET Network case study describes the engagement.

How Opsio helps

Opsio helps small and mid-sized businesses plan, move and run their cloud setup on AWS, Azure and Microsoft 365, including identity and device management with Intune. After the move, our managed cloud services cover monitoring, patching, backup and cost reviews.

Frequently asked questions

What is the best cloud service for a small business?

For most small businesses the most useful cloud service is a productivity suite, Microsoft 365 or Google Workspace, because it covers email, documents, file sharing and meetings in one place. Pick the one that fits the tools and file formats your team and customers already use.

Is cloud computing cheaper than running our own server?

Usually, once you include hardware replacement, power, backup, security updates and the time someone spends looking after the server. It can be more expensive if infrastructure is left running unused, so set budgets and review the bill monthly.

Can a small business use AWS?

Yes. AWS has no minimum size and charges for what you use. It makes most sense when you host a website, an online shop or your own software. For email and office work, a SaaS suite is simpler.

What happens to our data if the cloud provider has an outage?

Your data stays stored, but you may not reach it until service returns. Reduce the impact with an independent backup, a second internet connection in the office and, for critical systems, a design that spans more than one availability zone.

Do we need an IT person to use cloud services?

Not full time, but someone must own the setup: users, security settings, backups and cost. In small companies that is often a partner on a monthly agreement plus one internal contact.