Title: ITEC0724 Modern Related Technology on Mobile D. : Cloud Deployment Model Migration and Mobile Cloud Computing
1ITEC0724 Modern Related Technology on Mobile D.
Cloud Deployment Model Migrationand Mobile
Cloud Computing
2Lecture Outline
- Cloud deployment models
- Business case
- Moving applications to the cloud
- Application attributes
- Cloud service attributes
- System abstraction
- Cloud bursting
- Mobile market
- Adopting mobile cloud applications
3Cloud Deployment Models (NIST)
- Public clouds
- Private clouds
- Hybrid clouds
The models by the US National institute of
standards and technology (NIST)
4Public Clouds
- Infrastructure is for public use
- Own by organization selling cloud services
- Potential advantage
- No risk in infrastructure
- Potential disadvantage
- Lack of security
5Key public cloud providers
- Google
- Google Docs, Google App Engine (GAE)
- EMC Corporation
- Parent company of VMWare, one of the leading
companies in virtualization - Microsoft Azure Platform
- Amazon Web Services (EC2 and S3)
- Salesforce.com (force.com)
6Private Clouds
- Basically, its a cloud infrastructure set up,
managed, and upgraded by an organization or
community for their own use (private use) - Potential advantage
- Full control of all resources and technologies
such as security - Potential disadvantage
- Infrastructure cost
7Technology for Private Clouds
- Commercial vendors are entering in this domain
quite fast - Vmware
- Open Source providers are also there
- Eucalyptus, Ubuntu
8Hybrid Clouds
- Combine multiple clouds (private and public)
- Each cloud retains its unique characteristics,
but bound together as a unit - Potential advantage
- Security and Infrastructure cost
- Potential disadvantage
- Policies compliance???, Synchronization???
9Other types of clouds
- Virtual private clouds (VPC)
- Run on top of public cloud
- Leverage VPN technology to customize network
topology and security setting - Advantage infrastructure and security
- Example, Amazon Web Services
10Other types of clouds (2)
- Community clouds
- Serve a common function or purpose of multiple
units - Share common concerns such as mission, policies,
security and regulatory compliances - Units can be within one organization or multiple
organizations - Advantage
- Cost shared infrastructure cost
- Security higher level of security and privacy
11Business cases
- Dimensions to consider to save cost
- Ongoing operational cost reduction
- The value of preserving capital
- The value of upsizing on demand
- The value of downsizing on demand
- The value of agility
- The value of reuse
- The value of coolness
12Operational Cost Reduction
13Upsize and downsize on demand
14Case Study on Oil Gas Industry
- The migration use-case of an IT System
- From a companys in-house data center
- To Amazon EC2
System Overview
System Deployed in the Cloud
15Infrastructure costs
- Company C paid 104,000 to Company B for the
system in 2005, 19,200 of which was for the
systems infrastructure. - In addition, C paid B 43,000 per year for system
support and maintenance, 3600 of which is for
the running costs of the system infrastructure. - Over a 5 year period, the total cost of the
system infrastructure is therefore 19,200 (5
x 3,600) 37,200
16Price Comparision
- Amazon EC2 provides an option of using either
small or large server instances depending on the
amount of CPU power and RAM required. - In Cloud, 37 cheaper compared to 1 small and 1
large server instance
17Support and Maintenance
- In 2005, 218 Support calls have been made
regarding the operation of the system. - The majority were about software problems.
- 45 calls were related to the systems
infrastructure. - 38 calls backup problems
- 5 calls network problems
- 2 calls power outages at B
- In cloud 21 eliminated
18Stakeholders Impact Analysis
- Stakeholders impact analysis is a method of
identifying potential sources of benefits and
risks from the perspectives of multiple
stakeholders. -
19The steps to do business case
- Understanding the existing issues
- Define value points
- Model as is
- Model to be
- Assign costs
- Define hard benefits and soft benefits
- Define risks
- Create business case (save cost?)
20Moving applications to the cloud
- Deploy Application to the cloud?
- Entirely or Part of the application is on the
local system and another part is in the cloud - Migration involves
- Functionality Mapping - Identification of
potential benefits associated with migration - Analysis of critical features of application
- Analysis of features supported by cloud provider
- Nature of target cloud platform
- Evaluation of supported tools and technologies
21Application attributes
- Attributes to analyze for porting applications to
the cloud - Application
- Availability
- Data management
- Cost
- Maintenance
- Security
- Scalability
- Interfaces
22Application Attributes (2)
- Quality attributes associated with application
- Abstraction, configuration, interoperability,
modularity, reusability, language support,
monitoring support, staffing requirements, tool
support. - Quality attributes associated with availability
- Fault management, Geographic location, resource
pooling, resource access, reliability, uptime. - Quality attributes associated with scalability
- Caching, licensing, lifecycle management, load
balancing, replication, resource provisioning - Quality attributes associated with cost
- Development cost, resource cost, staging cost.
23Application Attributes (3)
- Quality attributes associated with data
management - Data exchange, indexing, online/offline access,
portability, query, state, store type, data
structures, transactions. - Quality attributes associated with security
- Access, auditing, authentication, cryptography,
identity, regulations, remote access, security
rules, trust relationships. - Quality attributes associated with maintenance
- APIs, Configurations, Deployment.
- Quality attributes associated with user interface
- Ease of use, interface features, user interaction.
24Cloud Service Attributes
- Features associated with application
- Accounting schemes, operating system support,
database support, resource pooling mechanisms,
site location, redundancy and replication,
relation management, virtual machine types, APIs. - Platform features
- Application support, deployment environments,
Internationalization (languages and locale),
programming langue support, testing, API and
command line interfaces.
25Cloud Service Attributes (2)
- Infrastructure features
- Availability, network support, load balancing,
reliability, replication, database support.
26Which cloud types to select?
27System Abstraction
- Target should be able to provide abstraction of
all required physical resources through
virtualization. - Example, Medical imaging system
28Cloud Bursting
- Cloud should be able to serve access capacity
when required. - Example, Reservation system
29Following types of application are more suitable
for cloud
- Not mission critical.
- Not handling core business operations.
- Not dealing with sensitive data.
- Can tolerate high network latencies and work on
low network bandwidth. - Following industry standards. E.g. using
standardized tools for object to relational
mappings. - Do not require detailed customization for each
tenant. - Organization involved in porting have full
knowledge of application and its associated
domain.
30Mobile Cloud Computing
Cloud Computing
- Need ubiquitous Devices
Mobile
- Need Ubiquitous Apps
- gtPerformance Storage
31Mobile Market
32Number of Subscribers
33Challenges in Mobile
- Resources
- Battery life
- Storage
- Bandwidth
- Communication
- Security
- mobility
34Adopting Mobile Cloud Applications
- Mobile Cloud Computing (MCC)
- Definition
- Mobile Cloud Computing at its simplest, refers
to an infrastructure where both the data storage
and the data processing happen outside of the
mobile device. Mobile cloud applications move the
computing power and data storage away from mobile
phones and into the cloud, bringing applications
and mobile computing to not just smartphone users
but a much broader range of mobile subscribers.
(by the Mobile Cloud Computing Forum) - Briefly, MCC is a model where processing is done
in the cloud, data is stored in the cloud,
mobiles device serves as a presentation platform
or a display
35MCC Architecture
36Advantages of MCC
- Advantage of cloud to mobile computing
- Thinner devices -gt less processing, consume less
power, and have better battery life - Improving data storage capacity and processing
power - Avoidance of vendor lock-in.
- Inherits some advantages of clouds
- Dynamic resource provisioning, Scalability,
Reliability and Multi-tenancy
37What to be when cloud come!
- Less processing power, memory and storage but
needs to be aware of bandwidth and display
resolutions. - Featured phones with light weight operating
systems. - Smart phones with sophisticated operating
systems. e.g., iOS, Android, Windows Mobile,
Symbian.
38Android Market
39Apple iCloud
iCloud
40iCloud Application
iBook
Calendar, Mail and Contacts
Documents in the Cloud
Apps
iCloud
Find My Friends and Find My iPhone
iTunes in the Cloud
Photo Stream
Backup
41iPhone Application Hosting by Amazon
- Picture from Alexandra Institute
42iAWS Manager
- Picture from Alexandra Institute
43Summary
- Application requirements and cloud features
should be carefully analyzed while migrating
applications on cloud. - Quality attributes support by cloud provider
plays a vital role in successful migrations. - Business dimension of application migration is as
important to consider as technical aspects. - Mobile leverage cloud in terms of performance,
storage and clouds features
44References
- Chapter 1, 14 of Course Book Cloud Computing
Bible, 2011, Wiley Pub. Inc. - Cloud Migration A Case Study of Migrating an
Enterprise IT System to IaaS, Khajeh-Hosseini,
A., Greenwood, D., Sommerville, I., 2009 - Chapter 4-7, 10. 11, 20 of Cloud Computing and
SOA Convergence in your Enterprise, Linthicum,
D., S. - A Survey of Mobile Cloud Computing Architecture,
Applications, and Approaches