What Is Microsoft Azure?

What Microsoft Azure actually is

In plain English

Azure is not one single product. It is a collection of more than 200 cloud services covering computing power, storage, databases, networking, analytics, AI and security. Microsoft describes Azure as a platform for building, deploying and managing applications, with support for infrastructure as a service and platform as a service. In plain English, that means you can either rent raw IT resources such as virtual servers, or use more managed services so your team spends less time maintaining the plumbing.

Common business uses

Typical examples

Host websites, apps and APIs in the cloud rather than on local servers.
Run virtual machines for line-of-business software without buying and maintaining physical hardware.
Back up data and support disaster recovery with Azure Backup and Azure Site Recovery.
Store business data in managed storage and databases.
Extend on-premises systems into hybrid cloud environments using Azure services and management tools.

Why directors pay attention

Azure can reduce hardware refresh cycles, let businesses add capacity without large upfront infrastructure purchases, and help them pay for more resources as needed rather than buying everything in advance. It is also a bit like renting a very large data centre without having to argue about the air conditioning.

The important caveat is governance. The NCSC says cloud security is a shared responsibility: the provider secures parts of the platform, while the customer still has to choose services carefully, configure them securely and decide what data goes where.

Pricing and support

Azure pricing is usually consumption-based, so many services are pay-as-you-go with no upfront cost, and Microsoft provides a pricing calculator to estimate monthly spend. For steadier workloads, Microsoft also offers Azure Reservations with one- or three-year commitments, plus Azure savings plan for compute. Microsoft says eligible reservations can reduce some resource costs by up to 72% versus pay-as-you-go pricing, while the savings plan can reduce select compute costs by up to 65%, depending on service, region and usage. Support options include Basic, Developer, Standard and Professional Direct, with Unified for broader Microsoft estates.

UK compliance and data residency

For UK organisations, Microsoft lists UK South in London and UK West in Cardiff as Azure regions, and Microsoft says Azure geographies are designed around data residency and compliance requirements. Microsoft’s UK South region listing states that data is stored at rest in the United Kingdom. Even so, the NCSC advises organisations to ask exactly where data is stored, processed and managed, because this can vary by service and configuration, and legal jurisdiction still matters.

Bottom line: Azure can be a strong fit for UK businesses, but residency and compliance should be checked service by service rather than assumed.