Cloud

1. On-demanded self-service
2. Board network access
3. Location independent resource pooling
4. Rapid elasticity
5. Measured service

1. Orchestration

   Annotations:

   • automated coordination and management of IT resoources are management issue that need to be deal with
   1. Managing assets
   2. Monitoring services
   3. Change management
   4. Billing and Metering
2. Provisioning

   Annotations:

   • Process of making computing resources available to users
   1. Provisioning
   2. Deprovisioning
   3. Self-service provisioning
3. Networking

   Annotations:

   • Neede for high-speed network
4. Virtualisation & Hypervisor

   Annotations:

   • Hypervision allow muti-operation system in same machine, which allow virtualisation
   1. Characteristics
      1. Partitioning
      2. Isolation
      3. Encapsulations
   2. Benefits
      1. Consolidation to reduce hardware cost
      2. Optimization of workloads
      3. IT flexibility and responsiveness
   3. Type
      1. Storage Virtualization
      2. Network Virtualization
      3. Compute Virtualization

Annotations:

• Must enable Multitenancy

1. IaaS

   Annotations:

   • computer, storage and networking as a service
   1. Traditional Procedure
      1. Sizing estimate
      2. Evaluate alternative
      3. Procurement
      4. Receive
      5. Provisioning
      6. Effort

         Annotations:

         • 100 - 200 person-hour
      7. Duration

         Annotations:

         • 6-9 months
      8. Cost

         Annotations:

         • cost vary greatly
   2. Inhouse virtualisation
      1. Reduce cost and effort
      2. Still have hardware limits
   3. Type
      1. Computing

         Annotations:

         • extra server, stand up instance of virtual machine on the cloud, can specify computer configuration
      2. Storage

         Annotations:

         • extra storage on the cloud, can specify database parameters such as Data Center, size, data redundancy options and format
      3. Network

         Annotations:

         • when need to manage netwok and IP address, virtual private network, can specify IP address range, subnets configuration, route table, network gateway, network security
   4. Benifit
      1. save cost and effort
      2. pay-as-you-go
      3. flexible
   5. Consideration
      1. Reliability
      2. Security
      3. Usability
      4. Features
      5. Responsiveness
      6. Location
      7. Support
      8. Cost
   6. Standard
      1. Free and open source
      2. Turn physical resources into IaaS
      3. Provides dashboard and API management
      4. Advantages
         1. Common access and management
         2. Facilitates Hybrid Clouds
         3. Enables cloud integration
         4. using basic IaaS capabilities
         5. Increases global market / reduces competitive pressures
2. PaaS

   Annotations:

   • provide middleware and development tools
   1. Characteristics
      1. Enable middleware platform in a short time

         Annotations:

         • enables middleware platform to be deployed in a short time without the need to provision hardware or software
      2. Access administration via browser
      3. Speeds up development

         Annotations:

         • speed up when use with API providing services
      4. Target to software programmers, not end users
   2. Reason
      1. Speed up environment setup time

         Annotations:

         • can use pre-built platform and server rather then setup all by oneself
      2. Reduced licence cost

         Annotations:

         • not necessary to have full licence for all software
      3. Reduced time to maintain middleware applications

         Annotations:

         • cons - lose some control over middleware versions, depending on vendor
      4. Speed up development time

         Annotations:

         • use of API
      5. Reduce time to manage scalability and security
      6. Improved performance and availability
   3. Cloud Foundry
      1. Multi-Languages
      2. Multi-Frameworks
      3. Multi-Services
      4. Multi-Cloud, Multi-Iaas
3. SaaS

   Annotations:

   • software application
   1. Characteristics
      1. not require installation
      2. can be accessed via a browser
      3. Quick availability
      4. customisable and configurable
      5. Intergration via API
      6. Collaborative fratures
      7. Target end users, not developers
   2. Advantages
      1. improved business agility
      2. Less IT involvement, fewer resources for maintenance
      3. fewer integration cost
      4. Best of breed offerings
      5. Decreased time to market
      6. 24x7 access around the world for internal and external users
      7. Always run in most updated version
      8. Effective point solutions
      9. Optimized to work seamlessly
      10. Expedited setup and configuration
      11. Adaptable, flexible and robust functionality
   3. Type
      1. Collaboration
      2. Office Productivity
      3. Accounting
      4. Marketing
      5. Project Maangement
      6. Industry
      7. Customer Relationship Management
      8. Enterprise Resource Planning
      9. Human Resource Management
      10. Content Management
4. BPaaS

   Annotations:

   • specialised type of SaaS that cover the entire business process
   1. facilitates Business Process Outsourceing
   2. a series of functions to deliver service to customers

1. Public Cloud
   1. Low cost
   2. Expertise
   3. Easy access
   4. switching cloud providers
2. Community Cloud

   Annotations:

   • shared private cloud
   1. Shared infrastructure
   2. Shared cost
   3. Shared mission, policy and compliance
   4. Requires commitment
3. Private Cloud
   1. dedicated and secure infrastructure
   2. Limited by organisation's resources
   3. Can run off premises
   4. not require federated identity, location awareness, common APIs
   5. Managed Private

      Annotations:

      • located in organization's own data center, operated and managed by external vendor
   6. Hosted Private

      Annotations:

      • resides in vendor's data center, operated and managed by vendor, owned by organisation
   7. Private Cloud

      Annotations:

      • organisation owns and operates
4. Hybrid Cloud
   1. too expensive for just private cloud
   2. move some systems to private, some still run public
   3. Hightened security concerns

1. On-premise
2. Off-premise
3. On-shore
4. Off-shore

Annotations:

• Distributed computing

1. logical representation of a process
2. exposes a set of standard opertation
3. black box to its consumer
4. re-usable / repeatable
5. can be composed of other services
6. API
7. Web service and REST
8. Remote Procedure Calls
9. Java Remote Method Invocation (RMI)