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Azure reliability

Get the tools and training that you need to design and operate mission-critical systems with confidence

Reliability is a shared responsibility

Achieve your organisation’s reliability goals for all of your workloads by starting with the resilient foundation of the Azure cloud platform. Design and operate your mission-critical applications with confidence, knowing that you can trust your cloud because Azure prioritises transparency – always keeping you informed and able to act quickly during service issues.

If you’re looking to optimise an existing application on Azure, get started with the Azure Well-Architected Framework, a set of guiding tenets across five core pillars: reliability, security, performance efficiency, cost optimisation and operational excellence.

Start with a reliable foundation on Azure infrastructure

Learn about ongoing Microsoft investments to maintain and improve cloud platform reliability in Azure CTO and Technical Fellow Mark Russinovich’s Advancing Reliability blog series, which focuses on these four key areas:

The Microsoft network connects more than 60 Azure regions, 220 Azure data centres, 170 edge sites and over 165,000 miles of terrestrial and subsea fibre worldwide, which connects to the rest of the Internet at strategic global edge points of presence. Learn more about Microsoft network reliability in this two-part blog post.

Azure continuously delivers innovative new services and security by making constant improvements to its infrastructure. Learn how Azure minimises the impact of these updates on customers by using a rigorous change automation process.

Find out how Azure is working to ensure high availability for your VMs by making them less susceptible to component failures through the Project Tardigrade platform resiliency initiative.

Learn about the no- and low-impact update technologies – including hot patching, memory-preserving maintenance and live migration – that Azure uses to maintain its infrastructure with little or no customer impact or downtime.

Choose the right Azure resilience capabilities for your needs

Find out which Azure high-availability, disaster recovery and backup capabilities to use with your apps. Also, learn how to select the compute, storage and geographic (local, zonal and regional) redundancy options that are right for you.

Enable built-in resilience

Take advantage of optional Azure services and features to achieve your specific reliability goals.

Availability Zones

Run critical workloads across data centres with independent power, cooling and networking.

Availability sets

Achieve redundancy within a data centre by collocating or separating resources.

Azure Traffic Manager

Implement automatic failover, optimise traffic and combine on-premises and cloud systems.

Azure Site Recovery

Replicate on-premises and Azure workloads from a primary site to a secondary location.

Azure Backup

Back up data with a simple, secure and cost-effective recovery and restoration solution.

Azure Storage

Create and store multiple copies of your data with redundancy options for any scenario.

Monitor your cloud so that it isn’t a black box

Ensure long-term reliability with monitoring tools to identify, diagnose and track anomalies – and optimise your reliability and performance.

Azure Service Health

Identify resource issues and resolve them using a customisable dashboard.

Azure Monitor

Collect, analyse and act on telemetry data from Azure and on-premises environments.

Azure Application Insights

Get intelligent insights into app usage and diagnose anomalies.

Network Watcher

Monitor, diagnose and gain insights into network performance and health.

Azure Advisor

Optimise apps and systems for reliability with recommendations based on usage telemetry.

Reliability trusted by organisations of all sizes

Keeping trains on time with intelligent maintenance

"The PaaS functions in Azure made it easier to achieve the scalability we wanted. Azure has a wealth of functions, from data collection and storage to data analysis and API management, plus sophisticated operational management and monitoring functions. These features make it possible to develop a multiuser system that has zero downtime."

– Tatsunari Nishibuchi, Subgroup Manager, Systems Group, Social Infrastructure Platforms Promotion Project Group, Mitsubishi Electric Corporation
Mitsubishi Electric Engineering

Serbia’s largest airport soars with automated recovery

"We wanted a business continuity plan for recovery for the business systems we need to run the airport, but without the expense of commissioning and maintaining secondary infrastructure. We also wanted to ensure recovery is fast and automated in the event of any failure."

– Marko Marković, IT Department Director, AD Aerodrom Nikola Tesla Beograd
AD Aerodrom Nikola Tesla Beograd

Clinical alerts delivered at any scale with Stat

"We need 100 percent reliability in mission-critical apps. That's what we get from Azure SignalR Service and the other Microsoft solutions that we used to create Stat. We're very pleased."

– John McConnell, Supervisor of Solution Architecture and Development, University of Vermont Medical Center
University of Vermont Medical Center

Stable insurance app delivers premium customer experience

"Before we went through the end-of-year period, the stability and performance of the calculator were my main concerns . . . but it ended up running the smoothest out of all the solutions in our application landscape. It's very stable, and web pages even load slightly faster now."

– Pieter Van Soerland, IT Manager, Zilveren Kruis
Zilveren Kruis

Kodak Alaris boosts productivity by improving ERP resilience

"The one thing I don't want is my CIO coming to me because there's a problem with our ERP. The truth is, it never happens anymore—it's a real testament to our ERP's reliability in Azure."

– Joseph Calabrese, IT Operations Manager, Kodak Alaris
Kodak Alaris

Making SAP even more flexible and resilient with Azure

"Cloud computing is easily one of the best IT achievements in the business world. When we decided to move to it with the help of Microsoft Azure, we got efficiency, reliability, flexibility, and speed as much as we wanted. We still think we received nothing but benefits."

– Erick Cardenas, IT Administrator, KOT Insurance Company AG
KOT Insurance Company AG

Documentation, training and resources

Azure Architecture Center

Build reliable solutions using established patterns and best practices:

Microsoft Learn

Gain new skills to help you make your apps and systems more reliable with these free Microsoft Learn modules:

Site Reliability Engineering (SRE)

Learn how to use SRE, a discipline that helps organisations achieve the appropriate level of reliability in their systems, services and products:

Learn more about architecting for reliability, one of the five pillars of architectural excellence in the Azure Well-Architected Framework