Saranya Sriram Developer Evangelist | Microsoft saranyas@microsoft.com

1. Saranya Sriram Developer Evangelist | Microsoft saranyas@microsoft.com

2. Azure™ Services Platform

3. Azure™ Services Platform

4. This Talk • Windows Azure basics • Model and architecture • Demo: Basic cloud program • Demo: Cloud on your desktop • Windows Azure core programming concepts • Web and worker applications • Storage capabilities • Demo: Media library application

5. What is the cloud ? • A set of connected servers • On which developers can: • Install and run services • Store and retrieve data

6. Desktop And Cloud Hardware Desktop Hardware Cloud Hardware • Infrequent catastrophic system failures • Ability to scale limited by CPU/disk/memory slots • Frequent component failures infrequent system failure • Ability to scale limited by power/real estate/opex

7. Windows Azure • The Windows Azure provides core technologies for building rich services on top of unreliable but scalable hardware (i.e., a cloud operating system) • Provides features that mask common sources of failures to greatly simplify programming • Supports building applications that scale • Programming tools and interfaces are designed to be familiar to traditional desktop programmer • However, introduce new concepts that are similar to existing ones at a different abstraction level

8. Whatis Windows Azure? • It is an operating system for the cloud • It is designed for utility computing • Main Features being • Service Management • Compute • Storage • Developer Experience

9. Desktop And Related Azure Concepts Desktop Windows Azure • EXE • Service Package • Application Configuration • Service Configuration • Manifest • Service Definition • Service Role • Web Role • Worker Role • DLL • Windows Forms Library • Windows Service • Desktop Data Store • Internet Data Store

10. Windows Azure Basics Fabric Controller • Owns all the data center hardware • Uses the inventory to host services • Similar to what a per machine operating system does with applications • The FC provisions the hardware as necessary • Maintains the health of the hardware • Deploys applications to free resources • Maintains the health of those applications

11. Modeling Simple Services Public Internet Template automatically maps to service model Frontend Web Role Background Process Role Load Balancer Fundamental Services

12. Windows Azure Basics Service Concepts • Service definition • Defines aspects of a service that cannot be changed without redeployment • Types of roles and static role configuration • Set of configuration settings for a role • Contract with the environment code runs • Service configurations • Defines values for properties that can be dynamically updated for a running deployment • Values of a configuration parameter • Number of running instances

13. Accessing Windows Azure Your Cloud Application End Users Coming Soon Microsoft Visual Studio Development Environment Developers

14. demo - Basic Cloud Applictaion- The cloud on your desktop

15. Web Role • Web farm that handles request from the internet • IIS7 hosted web core • Hosts ASP.NET • XML based configuration of IIS7 • Integrated managed pipeline • Supports SSL • Windows Azure code access security policy (CAS) for managed code Public Internet Web Role Load Balancer Storage Services

16. Worker Role • No inbound network connections • Can read requests from queue in storage • Windows Azure specific CAS policy for managed code Public Internet Worker Role Storage Service

17. Windows Azure Storage Abstractions • Blobs – provide a simple interface for storing named files along with metadata for the file • Tables – provide structured storage. A table is a set of entities, which contain a set of properties • Queues – provide reliable storage and delivery of messages for an application

18. Account • Container • Block • Blob Blob Storage ConceptsKey concepts account, container, blob, and blocks • IMG001.JPG • Pictures • IMG002.JPG • Account • Block AAAA • Movies • MOV1.AVI • Block AAAB • Block AAAC

19. Queue Storage ConceptsAccount, queue, and message • Account • Queue • Message • 128x128, http://… • Thumbnail Jobs • 256x256, http://… • Account • http://… • Indexing Jobs • http://…

20. Table Storage ConceptsAccount, table, and entity • Account • Table • Entity • Name=…hash=… • Users • Name=…hash=… • Account • Tag=…id=… • PhotoIndex • Tag=…,id=…

21. demo - Media (Picture / Video) library

22. Share Photos/Videos Service Architecture Public Internet Web Role (Blob) Worker Role (Queue) Load Balancer Storage Service

23. Key Take Aways • Reliable and scalable • Most faults masked from the developer • Supports partitioning of data and stateless programming model for building scalable systems • Familiar • Existing technologies like ASP.NET interoperate well with Windows Azure • Open platform • Connect outbound to any server • Open protocols and APIs on all components

24. References • http://www.Azure.Com/windows • Environment: • Windows Vista SP1 (when installing on Windows Vista) • .NET Framework 3.5 SP1 • IIS 7.0 (with ASP.NET and WCF HTTP Activation) • Microsoft SQL Server Express 2005 or Microsoft SQL Server Express 2008 • Windows PowerShell (optional) • Microsoft .NET Framework 3.5 Service Pack 1 • Microsoft Visual Studio 2008 Service Pack 1 (Installer) • SDKs: • Windows® Azure™ Software Development Kit (October 2008 CTP) • Windows Azure Tools for Microsoft Visual Studio October 2008 CTP • SQL Data Services (SDS) SDK (CTP) • Microsoft .net Services(Nov 2008 CTP) SDK

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