Collegenote
- Defining the Cloud
- Cloud Computing
- Emergence of Cloud Computing
- Cloud Based Service Models
- Grid Computing or Cloud Computing
- Components of Cloud Computing
- Cloud Computing Deployment Models
- Benefits of using cloud models
- Legal Issues in Using Cloud Models
- Ethical issues in cloud computing
- Characteristics of Cloud Computing
- Evolution of cloud computing
- Challenges for cloud computing
- Grid Computing
- Distributed Computing in Grid and Cloud
- Cloud Communication
- Communication-as-a-Service (CaaS)
- Advantages of CaaS
- Infrastructure-as-a-Service (IaaS)
- Popular IaaS solutions
- Modern On-Demand Computing
- Amazon’s Elastic Cloud
- Amazon EC2 Service Characteristics
- Elastic IP Addressing
- Monitoring-as-a-Service (MaaS)
- The Traditional On-Premises Model
- Platform-as-a-Service (PaaS)
- Key Characteristics of PaaS
- Software-as-a-Service
- SaaS Implementation Issues
- The key characteristics of SaaS
- Benefits of SaaS Model
- Jericho Cube Model
- XaaS
- Evolution from Managed service providers (MSP) to Cloud Computing
- Single Purpose architectures to multi-purpose architectures
- Service Oriented Architectures (SOA)
- Combining Cloud and SOA
- Characterizing SOA
- Open Source Software in Data Centers
- Data center virtualization
- Cloud data center
Key Characteristics of PaaS #
Chief characteristics of PaaS include services to develop, test, deploy, host, and manage applications to support the application development life cycle. Web-based user interface creation tools typically provide some level of support to simplify the creation of user interfaces, based either on common standards such as HTML and JavaScript or on other, proprietary technologies. Supporting a multitenant architecture helps to remove developer concerns regarding the use of the application by many concurrent users. PaaS providers often include services for concurrency management, scalability, fail-over and security. Another characteristic is the integration with web services and databases. Support for Simple Object Access Protocol (SOAP) and other interfaces allows PaaS offerings to create combinations of web services (called mashups) as well as having the ability to access databases and reuse services maintained inside private networks. The ability to form and share code with ad-hoc, predefined, or distributed teams greatly enhance the productivity of PaaS offerings. Integrated PaaS offerings provide an opportunity for developers to have much greater insight into the inner workings of their applications and the behavior of their users by implementing dashboard- like tools to view the inner workings based on measurements such as performance, number of concurrent accesses, etc. Some PaaS offerings leverage this instrumentation to enable pay-per-use billing models