Microsoft Azure

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Microsoft Azure
Microsoft Azure Logo.svg
Developer(s) Microsoft
Initial release February 1, 2010; 8 years ago (2010-02-01)
Operating system Linux, Microsoft Windows
License Closed source for platform, Open source for client SDKs

Microsoft Azure (formerly Windows Azure /ˈæʒər/) is a cloud computing service created by Microsoft for building, testing, deploying, and managing applications and services through a global network of Microsoft-managed data centers. It provides software as a service (SaaS), platform as a service (PaaS) and infrastructure as a service (IaaS) and supports many different programming languages, tools and frameworks, including both Microsoft-specific and third-party software and systems.

Azure was announced in October 2008, started with codename "Project Red Dog",[1] and released on February 1, 2010, as "Windows Azure" before being renamed "Microsoft Azure" on March 25, 2014.[2][3]


Microsoft lists over 600 Azure services,[4] of which some are covered below:


  • Virtual machines, infrastructure as a service (IaaS) allowing users to launch general-purpose Microsoft Windows and Linux virtual machines, as well as preconfigured machine images for popular software packages.[5]
  • App services, platform as a service (PaaS) environment letting developers easily publish and manage websites.
  • Websites, high density hosting[non sequitur] of websites allows developers to build sites using ASP.NET, PHP, Node.js, or Python and can be deployed using FTP, Git, Mercurial, Team Foundation Server or uploaded through the user portal. This feature was announced in preview form in June 2012 at the Meet Microsoft Azure event.[6] Customers can create websites in PHP, ASP.NET, Node.js, or Python, or select from several open source applications from a gallery to deploy. This comprises one aspect of the platform as a service (PaaS) offerings for the Microsoft Azure Platform. It was renamed to Web Apps in April 2015.[2][7]
  • WebJobs, applications that can be deployed to an App Service environment to implement background processing that can be invoked on a schedule, on demand, or run continuously. The Blob, Table and Queue services can be used to communicate between WebApps and WebJobs and to provide state.[citation needed]

Mobile services

  • Mobile Engagement collects real-time analytics that highlight users’ behavior. It also provides push notifications to mobile devices.[8]
  • HockeyApp can be used to develop, distribute, and beta-test mobile apps.[9]

Storage services

  • Storage Services provides REST and SDK APIs for storing and accessing data on the cloud.
  • Table Service lets programs store structured text in partitioned collections of entities that are accessed by partition key and primary key. It's a NoSQL non-relational database.
  • Blob Service allows programs to store unstructured text and binary data as blobs that can be accessed by a HTTP(S) path. Blob service also provides security mechanisms to control access to data.
  • Queue Service lets programs communicate asynchronously by message using queues.
  • File Service allows storing and access of data on the cloud using the REST APIs or the SMB protocol.[10]

Data management

  • Azure Search provides text search and a subset of OData's structured filters using REST or SDK APIs.
  • Cosmos DB is a NoSQL database service that implements a subset of the SQL SELECT statement on JSON documents.
  • Redis Cache is a managed implementation of Redis.
  • StorSimple manages storage tasks between on-premises devices and cloud storage.[11]
  • SQL Database, formerly known as SQL Azure Database, works to create, scale and extend applications into the cloud using Microsoft SQL Server technology. It also integrates with Active Directory and Microsoft System Center and Hadoop.[12]
  • SQL Data Warehouse is a data warehousing service designed to handle computational and data intensive queries on datasets exceeding 1TB.
  • Azure Data Factory, is a data integration service that allows creation of data-driven workflows in the cloud for orchestrating and automating data movement and data transformation.[13]
  • Azure Data Lake is a scalable data storage and analytic service for big-data analytics workloads that require developers to run massively parallel queries.
  • Azure HDInsight[14] is a big data relevant service, that deploys Hortonworks Hadoop on Microsoft Azure, and supports the creation of Hadoop clusters using Linux with Ubuntu.
  • Azure Stream Analytics is a serverless scalable event processing engine that enables users to develop and run real-time analytics on multiple streams of data from sources such as devices, sensors, web sites, social media, and other applications.


The Microsoft Azure Service Bus allows applications running on Azure premises or off premises devices to communicate with Azure. This helps to build scalable and reliable applications in a service-oriented architecture (SOA). The Azure service bus supports four different types of communication mechanisms:[15][16]

  • Event Hubs, which provide event and telemetry ingress to the cloud at massive scale, with low latency and high reliability. For example an event hub can be used to track data from cell phones such as a GPS location coordinate in real time[17].
  • Queues, which allow one-directional communication. A sender application would send the message to the service bus queue, and a receiver would read from the queue. Though there can be multiple readers for the queue only one would process a single message.
  • Topics, which provide one-directional communication using a subscriber pattern. It is similar to a queue, however each subscriber will receive a copy of the message sent to a Topic. Optionally the subscriber can filter out messages based on specific criteria defined by the subscriber.
  • Relays, which provide bi-directional communication. Unlike queues and topics, a relay doesn't store in-flight messages in its own memory. Instead, it just passes them on to the destination application.

Media services

A Paas offering that can be used for encoding, content protection, streaming, or analytics.[citation needed]


A global content delivery network (CDN) for audio, video, applications, images, and other static files. It can be used to cache static assets of websites geographically closer to users to increase performance. The network can be managed by a REST based HTTP API.[citation needed]

Azure has 54 point of presence locations worldwide (also known as Edge locations) as of August 2018.[18]



  • Azure Automation, provides a way for users to automate the manual, long-running, error-prone, and frequently repeated tasks that are commonly performed in a cloud and enterprise environment. It saves time and increases the reliability of regular administrative tasks and even schedules them to be automatically performed at regular intervals. You can automate processes using runbooks or automate configuration management using Desired State Configuration.[19]
  • Microsoft SMA

Machine learning

  • Microsoft Azure Machine Learning (Azure ML) service is part of Cortana Intelligence Suite that enables predictive analytics and interaction with data using natural language and speech through Cortana.[20]
  • Cognitive Services (formerly Project Oxford) are a set of APIs, SDKs and services available to developers to make their applications more intelligent, engaging and discoverable.


Azure functions are used in serverless computing architectures where subscribers can execute code as a Function-as-a-Service (FaaS) without managing the underlying server resources.[21]


  • On February 4, 2016, Microsoft announced the General Availability of the Azure IoT Hub service.[22]
  • On December 5, 2017, Microsoft announced the Public Preview of Azure IoT Central; it's Azure IoT SaaS service.[23]
  • On October 4, 2017, Microsoft began shipping GA versions of the official Microsoft Azure IoT Developer Kit (DevKit) board; manufactured by MXChip.[24]
  • On April 16, 2018, Microsoft announced the launch of the Azure Sphere, an end-to-end IoT product that focuses on microcontroller-based devices and uses Linux.[25]
  • On June 27, 2018, Microsoft launched Azure IoT Edge, used to run Azure services and artificial intelligence on IoT devices.[26]
  • On November 20, 2018, Microsoft launched the Open Enclave SDK for cross-platform systems such as Arm TrustZone and Intel SGX.[27]

Regional Expansion and Examples

Azure is generally available in 42 regions around the world. Microsoft has announced an additional 12 regions to be opened soon (as of October 2018).[28] Microsoft is the first hyper-scale cloud provider that has committed to building facilities on the continent of Africa with two regions located in South Africa.[29] An Azure geography contains multiple Azure Regions, such as example “North Europe” (Dublin, Ireland), “West Europe” (Amsterdam, Netherlands). Where a location represents the city or area of the Azure Region. Each Azure Region is paired with another region within the same geography; this makes them a regional pair. In this example, Amsterdam and Dublin are the locations which form the regional-pair.[1]

Microsoft has some Gold partners available across the globe to sell its products. In August 2018, Toyota Tsusho began a partnership with Microsoft to create fish farming tools using the Microsoft Azure application suite for IoT technologies related to water management. Developed in part by researchers from Kindai University, the water pump mechanisms use artificial intelligence to count the number of fish on a conveyor belt, analyze the number of fish, and deduce the effectiveness of water flow from the data the fish provide. The specific computer programs used in the process fall under the Azure Machine Learning and the Azure IoT Hub platforms.[30]


Microsoft Azure uses a specialized operating system, called Microsoft Azure, to run its "fabric layer":[31] a cluster hosted at Microsoft's data centers that manages computing and storage resources of the computers and provisions the resources (or a subset of them) to applications running on top of Microsoft Azure. Microsoft Azure has been described as a "cloud layer" on top of a number of Windows Server systems, which use Windows Server 2008 and a customized version of Hyper-V, known as the Microsoft Azure Hypervisor to provide virtualization of services.[32]

Scaling and reliability are controlled by the Microsoft Azure Fabric Controller[33], which ensures the services and environment do not fail if one or more of the servers fails within the Microsoft data center, and which also provides the management of the user's Web application such as memory allocation and load balancing.[34]

Azure provides an API built on REST, HTTP, and XML that allows a developer to interact with the services provided by Microsoft Azure. Microsoft also provides a client-side managed class library that encapsulates the functions of interacting with the services. It also integrates with Microsoft Visual Studio, Git, and Eclipse.[35][36][37]

In addition to interacting with services via API, users can manage Azure services using the Web-based Azure Portal, which reached General Availability in December 2015.[38] The portal allows users to browse active resources, modify settings, launch new resources, and view basic monitoring data from active virtual machines and services. More advanced Azure management services are available.[39]

Deployment models

Microsoft Azure offers two deployment models for cloud resources: the "classic" deployment model and the Azure Resource Manager.[40] In the classic model, each Azure resource (virtual machine, SQL database, etc.) was managed individually. The Azure Resource Manager, introduced in 2014,[40] enables users to create groups of related services so that closely coupled resources can be deployed, managed, and monitored together.[41]


Ray Ozzie announcing Windows Azure at PDC 2008, October 27
  • October 2008 (PDC LA) – Announced the Windows Azure Platform[42]
  • March 2009 – Announced SQL Azure Relational Database
  • November 2009 – Updated Windows Azure CTP, Enabled full trust, PHP, Java, CDN CTP and more
  • February 1, 2010 – Windows Azure Platform commercially available[43][44]
  • June 2010 – Windows Azure Update, .NET Framework 4, OS Versioning, CDN, SQL Azure Update[45]
  • October 2010 (PDC) – Platform enhancements, Windows Azure Connect, improved Dev / IT Pro Experience
  • December 2011 – Traffic manager, SQL Azure reporting, HPC scheduler
  • June 2012 – Websites, Virtual machines for Windows and Linux, Python SDK, new portal, locally redundant storage
  • April 2014 – Windows Azure renamed to Microsoft Azure[2], ARM Portal introduced at Build 2014.
  • July 2014 – Azure Machine Learning public preview[46]
  • November 2014 – Outage affecting major websites including[47]
  • September 2015 – Azure Cloud Switch introduced as a cross-platform Linux distribution.[48]
  • December, 2015 – Azure ARM Portal (codename "Ibiza") released.[49]
  • March, 2016 - Azure Service Fabric is Generally Available (GA)[50]
  • September 2017 – Microsoft Azure gets a new logo and a Manifesto[51]
  • July 16, 2018 - Azure Service Fabric Mesh public preview[52]
  • September 24, 2018 - Microsoft Azure IoT Central is Generally Available (GA)[53]
  • October 10, 2018 - Microsoft joins the Linux-oriented group Open Invention Network.[54]


Microsoft has stated that, per the USA Patriot Act, the US government could have access to the data even if the hosted company is not American and the data resides outside the USA.[55] However, Microsoft Azure is compliant with the E.U. Data Protection Directive (95/46/EC).[56][57][contradictory] To manage privacy and security-related concerns, Microsoft has created a Microsoft Azure Trust Center,[58] and Microsoft Azure has several of its services compliant with several compliance programs including ISO 27001:2005 and HIPAA. A full and current listing can be found on the Microsoft Azure Trust Center Compliance page.[59] Of special note, Microsoft Azure has been granted JAB Provisional Authority to Operate (P-ATO) from the U.S. government in accordance with guidelines spelled out under the Federal Risk and Authorization Management Program (FedRAMP), a U.S. government program that provides a standardized approach to security assessment, authorization, and continuous monitoring for cloud services used by the federal government.[60]

Significant outages

Documented Microsoft Azure outages and service disruptions.

Date Cause Notes
2012-02-29 Incorrect code for calculating leap day dates[61]
2012-07-26 Misconfigured network device[62][63]
2013-02-22 Expiry of an SSL certificate[64] Xbox Live, Xbox Music and Video also affected[65]
2013-10-30 Worldwide partial compute outage[66]
2014-11-18 Azure storage upgrade caused reduced capacity across several regions[67] Xbox Live, Windows Store, MSN, Search, Visual Studio Online among others were affected.[68]
2015-12-03 Active Directory issues[69]
2016-09-15 Global DNS outage[70]
2017-03-15 Storage tier issues[71]
2017-10-03 Fire system glitch[72]
2018-06-20 Cooling system failure [73] North Europe region experienced 11 hours of downtime
2018-09-04 Cooling system failure due to inadequate surge protection (lightning strike) [74] CUSTOMER IMPACT: Starting at 09:29 UTC on 04 Sep 2018, customers with resources in South Central US may experience difficulties connecting to resources hosted in this region. A complete list of impacted services can be found below.

PRELIMINARY ROOT CAUSE: A severe weather event, including lightning strikes, occurred near one of the South Central US datacenters. This resulted in a power voltage increase that impacted cooling systems. Automated datacenter procedures to ensure data and hardware integrity went into effect and critical hardware entered a structured power down process.


  • Microsoft Azure certifications

Key people

  • Mark Russinovich, CTO, Microsoft Azure [75]
  • Scott Guthrie, Executive Vice President of the Cloud and Enterprise group in Microsoft
  • Jason Zander, Executive Vice President, Microsoft Azure [76]
  • Julia White, Corporate Vice President, Microsoft Azure [77]

See also


  1. ^ "Why is there a 'reddog' DNS Suffix for my VM's?". Cloudelicious. Retrieved 2018-06-26.
  2. ^ a b c "Upcoming Name Change for Windows Azure". Microsoft Azure. March 24, 2014. Archived from the original on March 24, 2014. Retrieved August 29, 2016.
  3. ^ Tharakan, Anya George and Dastin, Jeffery (October 20, 2016). "Microsoft shares hit high as cloud business flies above estimates". Rueters. Thomson Reuters. Retrieved October 21, 2016.
  4. ^ Directory of Azure Cloud Services,
  5. ^ "How to monitor Microsoft Azure VMs". Datadog. Retrieved September 16, 2016.
  6. ^ "Meet Windows Azure event June 2012". June 7, 2012. Retrieved June 27, 2013.
  7. ^ "Web App Service - Microsoft Azure". Microsoft.
  8. ^ "Mobile Engagement - Microsoft Azure". Retrieved July 27, 2016.
  9. ^ "HockeyApp - Microsoft Azure". Retrieved July 27, 2016.
  10. ^ "File Storage". Microsoft. Retrieved January 7, 2017.
  11. ^ Hassell, Jonathan (September 3, 2014). "Microsoft's StorSimple: A first look at the 8000 series". Computerworld.
  12. ^ "Azure and CONNX". CONNX. Retrieved October 30, 2014.
  13. ^ "Introduction to Azure Data Factory". Retrieved 2018-08-16.
  14. ^ "HDInsight | Cloud Hadoop". Retrieved 2014-07-22.
  15. ^ "Sanitization". Retrieved 21 November 2018.
  16. ^ sethmanheim. "Overview of Azure Service Bus fundamentals". Retrieved 2017-12-12.
  17. ^ "Event Hubs". Retrieved 21 November 2018.
  18. ^ "Azure Regions | Microsoft Azure". Retrieved August 15, 2018.
  19. ^ eamonoreilly. "Azure Automation Overview". Retrieved September 6, 2018.
  20. ^ "Why Cortana Intelligence?". Microsoft.
  21. ^ "What is Microsoft Azure Functions? - Definition from". SearchCloudComputing. Retrieved 2018-11-24.
  22. ^ "Azure IoT Hub general availability overview". Microsoft. Retrieved 4 February 2016.
  23. ^ Foley, Mary Jo. "Microsoft delivers public preview of its new Azure IoT software as a service". ZDNet. Retrieved 5 December 2017.
  24. ^ Pietschmann, Chris. "Azure IoT Developer Kits (AZ3166) Have Arrived". Retrieved 4 October 2017.
  25. ^ "Microsoft built its own custom Linux kernel for its new IoT service – TechCrunch". Retrieved 2018-04-17.
  26. ^ Foley, Mary Jo. "Microsoft's Azure IoT Edge, now generally available, is key to Redmond's IoT strategy | ZDNet". ZDNet. Retrieved 2018-08-15.
  27. ^ "Microsoft's edgy Open Enclave SDK goes cross platform".
  28. ^ "Azure Regions | Microsoft Azure". Retrieved July 17, 2017.
  29. ^ "Microsoft beats Google and Amazon to announce first African data centers, kicking off in 2018". VentureBeat. May 18, 2017. Retrieved July 17, 2017.
  30. ^ "Google goes bilingual, Facebook fleshes out translation and TensorFlow is dope - And, Microsoft is assisting fish farmers in Japan".
  31. ^ "What is Windows Azure Fabric Controller (FC)? - Definition from". SearchCloudComputing. Retrieved 2018-10-29.
  32. ^ Petertaylor9999. "Enterprise Cloud Adoption: How does Azure work?". Retrieved 2018-10-29.
  33. ^ Petertaylor9999. "Enterprise Cloud Adoption: How does Azure work?". Retrieved 2018-10-29.
  34. ^ Petertaylor9999. "Enterprise Cloud Adoption: How does Azure work?". Retrieved 2018-10-29.
  35. ^ "Azure Repos – Git Repositories | Microsoft Azure". Retrieved 2018-10-29.
  36. ^ "Microsoft Azure Developer Tools | Microsoft Azure". Retrieved 2018-10-29.
  37. ^ rmcmurray. "Azure Toolkit for Eclipse". Retrieved 2018-10-29.
  38. ^ Welicki, Leon. "Announcing Azure Portal general availability". Microsoft. Retrieved December 23, 2015.
  39. ^ "Azure Management Software". ParkMyCloud. Retrieved April 6, 2017.
  40. ^ a b FitzMacken, Tom. "Azure Resource Manager vs. classic deployment". Microsoft. Retrieved September 16, 2016.
  41. ^ FitzMacken, Tom. "Azure Resource Manager overview". Microsoft. Retrieved September 16, 2016.
  42. ^ "Ray Ozzie announces Windows Azure". ZDNet. Retrieved 28 October 2008.
  43. ^ "Windows Azure General Availability". February 1, 2010.
  44. ^ Pietschmann, Chris. "Happy 7th Birthday Microsoft Azure!". Retrieved 1 February 2017.
  45. ^ "SQL Azure SU3 is Now Live and Available in 6 Datacenters Worldwide". SQL Azure Team Blog. Microsoft. Archived from the original on June 20, 2013. Retrieved May 28, 2013.
  46. ^ "Microsoft Azure Machine Learning combines power of comprehensive machine learning with benefits of cloud". June 16, 2014.
  47. ^ "Human Error Caused Microsoft Azure Outage". December 20, 2014.
  48. ^ "Microsoft demonstrates its Linux-based Azure Cloud Switch operating system". September 18, 2015.
  49. ^ "Announcing Azure Portal general availability".
  50. ^ Fussell, Mark. "Azure Service Fabric is GA!". Microsoft. Retrieved 31 March 2016.
  51. ^ "Microsoft Azure gets a new Logo and a Manifesto". Build Azure. 2017-09-26. Retrieved 2018-01-09.
  52. ^ Daniel, Chacko. "Azure Service Fabric is now in public preview". Microsoft Azure. Microsoft. Retrieved 16 July 2018.
  53. ^ "Azure IoT Central is now available". Microsoft Azure. Microsoft. Retrieved 24 September 2018.
  54. ^ "Microsoft has signed up to the Open Invention Network. We repeat. Microsoft has signed up to the OIN".
  55. ^ Toor, Amar (June 30, 2011). "Microsoft: European cloud data may not be immune to the Patriot Act". Retrieved June 27, 2013.
  56. ^ "EU data privacy authorities approve Microsoft Azure", April 15, 2014,
  57. ^ "The collapse of the US-EU Safe Harbor", October 20, 2015, Brad Smith, President and Chief Legal Officer,
  58. ^ "Microsoft Azure Trust Center". Retrieved June 27, 2013.
  59. ^ "Microsoft Azure Trust Center Compliance". Retrieved June 27, 2013.
  60. ^ "FedRAMP Compliant Cloud Systems". Retrieved October 15, 2014.
  61. ^ "Summary of Windows Azure Service Disruption on Feb 29th, 2012". March 9, 2012. Retrieved July 12, 2017.
  62. ^ "Windows Azure outage hits Europe". July 26, 2012. Retrieved June 27, 2013.
  63. ^ "Microsoft pins Azure outage on network miscue". July 27, 2012. Retrieved June 27, 2013.
  64. ^ Microsoft’s Azure storage service goes down, locking out corporate customers from their data Archived July 26, 2011, at the Wayback Machine.
  65. ^ Bishop, Bryan. "Xbox Live and Windows Azure suffering from extended outages". Retrieved June 27, 2013.
  66. ^ "Microsoft's Windows Azure cloud hit by worldwide management interuption [sic]". October 31, 2013. Retrieved November 3, 2013.
  67. ^ Zander, Jason. "Update on Azure Storage Service Interruption". Microsoft. Retrieved December 5, 2014.
  68. ^ Foley, Mary J. "Microsoft says Storage service performance update brought Azure down". ZD.NET. Retrieved December 5, 2014.
  69. ^ "European Office 365 and Microsoft Azure users hit by service outage". Retrieved September 6, 2018.
  70. ^ Foley, Mary Jo. "Global DNS outage hits Microsoft Azure customers - ZDNet". Retrieved September 6, 2018.
  71. ^ "Microsoft confirms Azure storage issues around the world (updated)". March 16, 2017. Retrieved September 6, 2018.
  72. ^ "Microsoft Says Azure Outage Caused by Accidental Fire-Suppression Gas Release". October 4, 2017. Retrieved September 6, 2018.
  73. ^ "Microsoft Azure suffers major outage". Retrieved September 6, 2018.
  74. ^ Foley, Mary Jo. "Microsoft South Central U.S. datacenter outage takes down a number of cloud services - ZDNet". Retrieved September 6, 2018.
  75. ^ "Mark Russinovich - Blog - Microsoft Azure".
  76. ^ "Jason Zander - Blog - Microsoft Azure".
  77. ^ "Julia White - Blog - Microsoft Azure".

Further reading

  • Chappell, David (October 2008). "Introducing Windows Azure" (PDF). Microsoft.
  • "Stairway to Azure (3): Componentes de Cómputo y Almacenamiento". WarNov Developer Evangelist. Microsoft. November 19, 2009. Retrieved December 20, 2013.
  • "Microsoft Azure platform Demystified - Part 1 & 2". DNC Magazine. August 2016.

External links

  • Official website
  • Visual Studio Team Services
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