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| Cloud Portability Issue | Details |
| Customer Data Retrieval | After the Portability the customer data should be easily retrieve from destination cloud. |
| platforms Synchronization | The source cloud and destination cloud platforms must be Synchronized so that without any glitches so that from the destination cloud the data can be sent, retrieved. |
Portability Types
| Portability Type | Details |
| Data Portability | Moving of data from one cloud platform to other |
| Application Portability | It tells us that developed applications should run in any platform irrespective language used for development of application. |
| Platform Portability | It tells us that developed applications should run in any platform irrespective platform used. |
Cloud Portability Reasons by Customers
1. Increased Hosting cost.
2. Improve Quality of the service to meet SLAs.
3. Frequent changes to the services being offered, without prior warning or notice.
4. Security reasons.
6. Longer downtimes.
Interoperability
Interoperability is the capability of the system’s components (Hardware, Software) to work in a new environment. System’s components must synchronize to achieve interoperability.
Cloud System Components
| Cloud System Components | Example |
| Hardware | Operating systems (windows, Linux, mac e.t.c) |
| Storage | Software (Application frameworks, middleware, libraries, applications) |
Interoperability Types
| Application Interoperability | It is between the components of an application deployed on the system. It is achieved by using platform interoperability. |
| Platform Interoperability | It is between the different components of the platform deployed on the system. |
| Management Interoperability | It is between Cloud services (SaaS, PaaS or IaaS) and applications related to self-service. |
| Publication and Acquisition Interoperability | It is between different platforms (PaaS services and online marketplaces). |
Portability and Interoperability Challenges and Factors
| Cost | Less / more based on Cloud service providers and their ROI |
| Mobility | Degree of Mobility of your data. |
| Interoperability | It is the capability of the system’s components (Hardware, Software) to work in a new environment. System’s components must synchronize to achieve interoperability. |
| Privacy and Security | It is concerned with customer data / not. |
| Monitoring and Audit | SLA’s are met at every step with ensuring zero downtime. |
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