Moving to Cloud Computing Step-by-Step. David S. Linthicum,

Transcription

1 Moving to Cloud Computing Step-by-Step David S. Linthicum,

2 UNDERSTANDING THE RELATIONSHIPS Enterprise Architecture SOA Cloud Computing

3 SOA AND CLOUD COMPUTING One can consider cloud computing the extension of SOA out to cloud-delivered resources, such as storage-as-a-service, data-as-a-service, platform-as-aservice -- you get the idea. The trick is to determine which services, information, and processes are good candidates to reside in the clouds, as well as which cloud services should be abstracted within the existing or emerging SOA.

4 T HREE LAYERS OF CLOUD COMPUTING Software as a Service (SaaS) Finished applications that you rent and customize Platform as a Service (PaaS) Developer platform that abstracts the infrastructure, OS and middleware to drive developer productivity Infrastructure as a Service (IaaS) Deployment platform that abstracts the infrastructure

5 THE "CLOUD PYRAMID" Describes Cloud Services Economy Building blocks: IaaS -> PaaS -> SaaS Google App Engine Source: GoGrid

6 NIST defines cloud computing as a set of characteristics, delivery models, and deployment models 5 Characteristics On-demand self-service Ubiquitous network access Resource pooling Rapid elasticity Pay per use 3 Delivery Models Software as a Service (SaaS) Platform as a Service (PaaS) Infrastructure as a Service (IaaS) 4 Deployment Models Private Cloud Community Cloud Public Cloud Hybrid Cloud

7 THE CLOUD? Fixed, dedicated resources Hardware managed by others Shared applications Elastic Internet resources Provider-dedicated Web applications and Web content Off-Premises Cloud Native Web Applications Hosting SaaS Cloud Web Hosting Platform APaaS IaaS AIaaS Hosted dedicated Web applications and Web content Infrastructure Utility Commodity (industrialized) computing resources Programmable or programmatically accessible resources Shared application infrastructure as a service (AIaaS) Application platform as a service (APaaS) IaaS Integration as a service Size of the cloudlets and overlap shown is not to scale Source: Gartner Research

8 ORGANIZING THE CLOUDS Testing-as-a-Service Management/Governance-as-a-Service Security-as-a-Service Integration-as-a-Service Application-as-a-Service Process-as-a-Service Information-as-a-Service Database-as-a-Service Storage-as-a-Service Infrastructure-as-a-Service Platform-as-a-Service

9 WHY CLOUD? WHY CLOUD? THE EXISTING TRAJECTORY IS NOT GOOD $ Capability

10 UNDERSTANDING THE ROI

11 On-Premise $1,000,000 $500,000

12 Cloud Delivered

13 For the cloud, we're all in.

14 CLOUD POPULARITY=HYPE Source: CA

15 NEED A JOB?

16 CRAZY CLOUD WASHING

17 FEAR OF MULTITENANCY

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19 Connectivity becomes more challenging than ever A Connectivity Explosion Applications, formats, APIs, protocols, standards, etc. Connected business partners Connectivity neither trivial nor static: Incompatible structures, semantics, business rules No mature standards Changes abound Not easy to create robust Web services interfaces Source: Pervasive Software

20 Data volumes increases at an explosive rate Data subject to Sarbanes-Oxley, Basel II or other governmental regulation (IDC) 1 Exabyte = 1 quintillion bytes

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22 Cloud 3 Cloud 1 Intercloud Cloud 2 Cloud Cloud 1 Cloud 2 Standalone cloud enterprise Extended enterpris e cloud Source: Bob Grossman

23 CLOUD ABSTRACTION Cloud C Task Routing Cloud B Cloud A

24 HYBRID CLOUDS Remote cloud pay per use) (large, Workload factoring User requests User requests Dynamic Workload Local data center (small, dedicated) 24 Source: NEC

25 HERE WE GO AGAIN?

26 Cloud-computing will help to optimize the Federal data facility environment and create a platform to provide services to a broader audience of customers. President s Budget for FY 2010 Section 9, Cross Cutting Programs

27 IT IS SKEPTICAL IT is understandably skittish about cloud computing. However, many of the cloud computing resources out there will actually provide better service than on-premise. Security and performance are still issues. Also, control.

28 S E C U RI T Y A N D M AT U R I T Y TO P L I S T O F C O N C E RNS F O R CLOUD S E RV I C ES

29 CONSIDER PRIVATE CLOUDS Private Cloud Computing is Real Get Over It - Tom Bittman Gartner

30 CONSIDERING CLOUDS However, not so fast. Not all computing resources should exist in the clouds, private or public. Cloud computing is not always cost effective. Do your homework before making the move.

31 CLOUD COMPUTING A Fit When: Processes, applications, and data are largely independent Points of integration are well defined Lower level of security is fine Core internal enterprise architecture is healthy Web is the desired platform Cost is an issue Applications are new Not A Fit When: Processes, applications, and data are largely coupled Points of integration are not well defined Higher level of security is required Core internal enterprise architecture needs work The application requires a native interface Cost is an issue Application is legacy

32 PATH TO THE CLOUDS Path to clouds: start with the architecture Understand: Mission drivers Information under management Existing services under management Core business processes

33 AS-IS

34 TO BE

35 DEPLOY

36 INFORMATION MODEL

37 SERVICE MODEL

38 STEPPING TO THE CLOUDS 1. Access the mission. 2. Access the culture. 3. Access the value. 4. Understand your data. 5. Understand your services. 6. Understand your processes. 7. Understand the cloud resources. 8. Identify candidate data. 9. Identify candidate services 10. Identify candidate processes. 11. Create a governance strategy. 12. Create a security strategy. 13. Bind candidate services to data and processes. 14. Relocate services, processes, and information. 15. Implement security. 16. Implement governance. 17. Implement operations.

39 DON T FORGET Episode 100 Last Week!

40 THANKS! David S. Linthicum BLOGS InfoWorld Intelligent Enterprise ebizq.net WEEKLY PODCASTS Cloud Computing Podcast COLUMNS SOA World Magazine Cloud Computing FOLLOW ME on Twitter