The Azure vs AWS question comes up frequently, and most of the available comparison material is written for companies running large-scale infrastructure engineering teams. For a 50-person business trying to decide where to host a server or a line-of-business application, the considerations are quite different.
The short answer: for most SMEs using Microsoft 365, Azure is the better default. For businesses without a strong Microsoft dependency, either works — and AWS has some genuine advantages.
If You're Already in the Microsoft Ecosystem
Azure and Microsoft 365 are designed to work together. Azure Active Directory (now called Microsoft Entra ID) underpins both, giving you single sign-on between your cloud applications and the Microsoft 365 tools your staff use daily. Managing identities, device policies, and application access from a single place is a meaningful operational advantage.
Azure's hybrid connectivity with on-premise Windows environments is also mature and well-documented. If you have Windows servers on-site and need to extend that to the cloud — for disaster recovery, for a hybrid deployment, or for gradually migrating workloads — Azure is the more natural fit.
The Microsoft ecosystem also means a larger pool of IT support providers who are Azure-competent. For an SME buying managed IT services, being on Azure means more options.
The Case for AWS
AWS has a larger service catalogue and in many specific areas — particularly certain database and machine learning services — leads on features and pricing. More importantly, AWS has a longer track record, and the depth of documentation and community knowledge around AWS is significant.
For businesses whose IT is not particularly Microsoft-centric — using Google Workspace instead of 365, running Linux servers, or building custom applications — the Microsoft ecosystem argument for Azure doesn't apply, and AWS is a competitive choice.
AWS support is widely available from IT providers, though perhaps less prevalent among smaller MSPs than Azure expertise.
Practical Considerations for SMEs
Cost management is the most commonly underestimated challenge with cloud platforms. Both Azure and AWS have complex pricing that's easy to misunderstand. Unmanaged cloud spend — resources left running, storage growing unchecked, bandwidth charges not anticipated — is a very common problem. Whichever platform you choose, implement cost monitoring and budgets from day one.
Support contracts on both platforms are pay-to-access above basic self-service. If you need someone to respond when your infrastructure has a problem at 3am, you're paying for a support tier. Factor this into your cost model.
Data residency matters for UK businesses under GDPR and sector-specific regulations. Both Azure and AWS have UK data centre regions. Confirm your configuration keeps data in the UK if this is a requirement.
Lift and shift vs cloud-native is a decision that affects cost and complexity significantly. Moving an on-premise server wholesale to a cloud VM (lift and shift) is fast and familiar but often not cost-efficient in the long run. Cloud-native approaches using managed services are more complex to implement but often more economical and resilient at scale. An SME doing this for the first time usually needs guidance — don't assume the migration is simpler than it is.