Projectacronym: NEBULA
Projectname: Anovelvocationaltrainingprogrammeoncloud computingskills Projectcode: 540226-LLP-1-2013-1-GR-LEONARDO-LMP
Document Information
Document IDname: Nebula_WP4_D4.3.1_Learning_Material_and_Content_2015_30_04 Document title: NebulaVETprogramlearningmaterialandcontent
Type: Slides
DateofDelivery: 30/04/2015 Workpackage: WP4
Activity D.4.3.1 Disseminationlevel: Public
Document History
Versions Date Changes Typeofchange Deliveredby Version1.0 15/04/2015 InitialDocument - UCBLand INSAofLyon Version2.0 26/06/2015 Edition
Modificationsaccording tofeedbackprovidedby
partners
UCBLand INSAofLyon
Acknowledgement
The personsof UCBLin chargeof producingthe course areParisa Ghodous, CatarinaFerreira DaSilva,Jean Patrick Gelas and Mahmoud Barhamgi. The persons from UCBL involved in preparing, translation and reviewareHindBenfenatki,GavinKempandOlivier Georgeon.
Thepersonsof “INSAofLyon”in chargeofproducingthe courseareFrédériqueBiennier, NabilaBenharkat. The persons from INSA of Lyon involved in preparing, translation and review are Francis Ouedraogo and Youakim Badr.
Disclaimer
Theinformationinthis documentis subjecttochangewithoutnotice.All rightsreserved.
The course is proprietary of UCBL and INSA of Lyon. No copying or distributing, in any form or by any means, isallowedwithouttheprior writtenagreementofthe ownerofthepropertyrights. Thispublication reflects the views only of the author, and the Commission cannot be held responsible for any use, which
Module 4 objectives
The aim of this module is to provide the student
with the methodologies and tools to fully
migrate the candidate applications and data to
the target cloud system
---Note: due to intellectual property reasons, the logotype of
UCBL must remain in all utilisation of this course content,
as well as the note “copyright DUNOD” mentioned in some
slides with figures.
OVERVIEW
Part 1: Motivation and challenges for migrating
applications
Part 2: Methodology of migrating applications to the
cloud
Part 3: Case studies
Migration to the cloud: roadmap
PART 1: Motivation and challenges of migrating
applications
PART 1 OVERVIEW
1. Why migrate to the cloud
2. Opportunities due to migration to the cloud
3. Barriers to migrating to the cloud
WHY MIGRATE TO THE CLOUD?
• In order to try to answer this question, we will consider
two perspectives; based inter alia on a case study of the
migration of an enterprise to the cloud
1• Company just as a user
• Company with an information system division
• A company whose business is not IT will focus on the
heart of business and employ computer skills
(accounting, human resources, courier, planning, etc.)
• The company does not care about the infrastructure that
is behind if it meets certain criteria related to cost,
availability, etc.
1 A. Khajeh-Hosseini, D. Greenwood et I. Sommerville, “Cloud Migration: A Case Study of
Migrating an Enterprise IT System to IaaS”, Cloud conference 2010. http://arxiv.org/ftp/arxiv/papers/1002/1002.3492.pdf
For a company who information technology is
not the heart of the trade
• Opportunities:
• The company can be interested in migrating to the
cloud for different reasons:
• The cost:
• The migration to cloud infrastructures and solutions improve expenses and income management whether on the user side or finance staff
• It facilitates the management of the treasury, since the
migration to the cloud requires little or no initial investment and billing is monthly, minimizing the variability of expenses related to the consumption of electricity
• Reduction of software costs: the company only pays what it consumes and will be able to provide save funds for
future innovations
For a company who information technology is not the
heart of the trade
•Opportunities:
• Extension of the lifetime of existing applications: by transferring existing applications to cloud platforms, companies extend
applications lifecycle and do not longer care about constraints related to infrastructure. Therefore, it overcomes the
obsolescence of certain applications • Availability and services:
• Elastic resources: necessary material resources can be adjusted according to fluctuations in the company's activity
• On demand access to data / applications • Access to mobile applications
• 7
• Green IT: one can observe a reduction in energy consumption by deploying thin workstations
For a company who information technology is
not the heart of the trade
• Opportunities:
• Security: the data storage is outsourced to provider
platforms and remains accessible if workstations are
crashed
• Organizational growth: the new product will meet a lot
of needs and thus gain greater market share
WHY MIGRATE TO THE CLOUD?
For a company who information technology is not the
heart of the trade
• Barriers:
• Interoperability problems: a company may be reluctant
to delegate some of its services to Cloud providers
because of doubts about their ability to do it
How to ensure end-to-end service quality and
continuity when a part is delegated to the Cloud?
• These are interoperability problems that the company must be very vigilant
WHY MIGRATE TO THE CLOUD?
For a company who information technology is not the
heart of the trade
•Barriers:
• Deterioration of customer service and service quality:
according to the case study cited above1
• Managers and IT support engineers are likely to become
dependent on cloud service providers and lose control of their
applications. They may require additional resources to perform the migration and manage unexpected problems
• They risk becoming dependent of the cloud provider to resolve hardware and network problems and may spend more time on tasks as they are not accustomed in their work environment
This can cause deterioration in the quality of services that they will no longer be able to control
1 A. Khajeh-Hosseini, D. Greenwood et I. Sommerville, “Cloud Migration: A Case
Study of Migrating an Enterprise IT System to IaaS”, Cloud conference 2010. http://arxiv.org/ftp/arxiv/papers/1002/1002.3492.pdf
WHY MIGRATE TO THE CLOUD?
For a company who information technology is not the
heart of the trade
• Barriers
• Location of data:
• The dematerialization and digitization of data on physical storage sites can lead to data fragmentation and their distribution over various countries
• This can break the laws and regulations of the country in terms of data protection
• In case of instability of the Internet, the company will have problems to access to their services
• Users do not know where their data is stored and they therefore have no traceable ways to find them. The transparency of cloud providers in this area is generally not systematically enforced
• Very often, companies seek to ensure security and confidentiality of their data in their own systems located within their walls. The risk of losing control over their data should be examined carefully because it may be unfounded
WHY MIGRATE TO THE CLOUD?
For a company who information technology is not the
heart of the trade
• Barriers
• Companies have service level agreements that bind them to their clients. The outsourcing of their IT applications as cloud services, implies legislation problems when there is recourse • Companies may also be constrained by certain requirements related to their activities that may be inconsistent with cloud computational and storage models
• The Internet latency is not suitable for all IT applications. The concern about the availability and service response time can be barrier
• The company's client may not agree to migrate their data to the cloud infrastructure
WHY MIGRATE TO THE CLOUD?
For a company who information technology is the heart
of the trade
• Opportunities
• Innovation and lightened budget:
• The staff in charge of information systems will now be able to focus on innovation and IT businesses
• They can also delegate all operational tasks on servers and IT infrastructures to cloud providers and reduce thus considerable expenses
• Enhanced status:
• Managers can improve their status in the organization if they can make the migration to the cloud. The latter is complex and has strong strategic
implications
• Opportunity to handle new technologies, allowing various involved employees to leverage their competences in new areas and
WHY MIGRATE TO THE CLOUD?
For a company who information technology is the heart of the trade:
•Opportunities
• Improved job satisfaction:
• IT support engineers can benefit from Cloud infrastructures that provide them opportunities to put aside old functions that consume a lot of time and to address new challenges of cloud administration
• They can participate in added value tasks, solving customer problems
• This is made possible in this infrastructure where service providers are responsible for maintenance
• Developers benefit from the migration to the cloud because they can be involved in IT system supports by conducting, for example, system performance
• Marketing and sales can also benefit from migration by offering new products and services that better meet customers’ needs in terms of scalability more easily than an internal data center
WHY MIGRATE TO THE CLOUD?
For a company who information technology is the heart of the trade
• Opportunities
• Opportunity to develop new skills:
• Engineers will handle new technologies that will be required in the future and practicing cloud administration
• Sales and marketing department will have more experience in the development and launch of new products and services
• Resources are abstract and undifferentiated:
• In cloud environment we deal more with details and performance results rather than the technical
specifications of the equipment used
• The material can change and improve. It is no longer
necessary to become familiar personally with the details of a given dynamic resource
WHY MIGRATE TO THE CLOUD?
For a company who information technology is the
heart of the trade
• Opportunities
• Quick adaptation and innovation:
• Setting up servers requires a few days to a few minutes
• It is possible to assemble information infrastructures and required technologies, on demand for the purpose of any experience or initiative
• The deadline for placing on the market of innovations is reduced, and unsustainable projects are quickly discarded
• Efficiency:
• Cloud resources are not dependent on devices and are not tied to a location
• A dedicated server for each application is no longer needed: the virtualized resources may reside anywhere
WHY MIGRATE TO THE CLOUD?
For a company who information technology is the heart of the
trade
• Barriers
• Changes: IT professionals need to learn new skills and invest in a great
transformation of development tools. The job may be profoundly transformed
• Loss of power and resources: the first risk might be staff downsizing
due to the outsourcing of tasks delegated to the cloud • Loss or destruction of data:
• The risks may relate to losses related to problems with operations and management of cloud, to a lack of data backup in the cloud or finally to undeleted data
• With the geographical distribution of possibly exploded data, it is necessary to find all concerned parts what can be a complex task
WHY MIGRATE TO THE CLOUD?
For a company who information technology is the
heart of the trade
• Barriers
• Malicious use:
• Unauthorized access to data and the risks of wrong authorization must be taken into account
• An error at this level can cause problems in the management of rights; so a user can be assigned access rights to data when it should not
