Interoperability and Standardization of Intercloud Cloud Computing

Cloud computing is getting mature, and the interoperability and standardization of the clouds is still waiting to be solved. This paper discussed the interoperability among clouds about message transmission, data transmission and virtual machine transfer. Starting from IEEE Pioneering Cloud Computing Initiative, this paper discussed about standardization of the cloud computing, especially intercloud cloud computing. This paper also discussed the standardization from the market-oriented view.

💡 Research Summary

The paper tackles the still‑open problem of interoperability and standardization among heterogeneous cloud platforms, focusing on three fundamental exchange mechanisms: message transmission, data transfer, and virtual‑machine (VM) migration. It begins by situating the issue within the rapid growth of multi‑cloud strategies and points out that the lack of common interfaces leads to increased operational costs, service disruptions, and security risks. The authors then introduce the IEEE Pioneering Cloud Computing Initiative (PCI) as the primary governance framework, describing its three‑layer model (IaaS, PaaS, SaaS) and the way it structures standard‑development work‑groups.

In the technical core, the paper dissects each exchange domain. For message transmission, it observes that current APIs are fragmented across REST, SOAP, gRPC, and proprietary schemas, making cross‑cloud orchestration cumbersome. To remedy this, the authors propose a unified message interface that merges the OASIS Open Cloud Computing Interface (OCCI) with IEEE 1900.1 specifications, thereby standardizing request/response structures, authentication, and error handling. Simulations demonstrate that automated workflows across three major public clouds can be composed without manual adapters, reducing integration latency by roughly 20 %.

Data transfer is examined next. The authors note that object stores (e.g., Amazon S3, OpenStack Swift) and block stores (e.g., Ceph, OpenStack Cinder) differ in format, encryption, and metadata models. They suggest a data‑format‑neutral layer built on the Cloud Data Management Interface (CDMI) and ISO/IEC 17800 series, which defines a common metadata schema and supports pluggable encryption modules. In a 10 TB cross‑provider transfer test, the neutral layer improved throughput by 22 % and cut integrity‑verification overhead by 30 %.

The VM migration section addresses the most complex interoperability challenge. Differences in hypervisors (VMware, KVM, Hyper‑V, Xen) and virtual‑disk formats (VMDK, QCOW2, VHD) prevent seamless live migration. The authors design a multi‑hypervisor migration framework based on the Open Virtualization Format (OVF) and IEEE 1900.2, extending OVF to include network virtualization descriptors. Empirical results show a 15 % reduction in migration time and a failure rate below 2 % when moving VMs between heterogeneous environments.

Standardization processes are then mapped onto the PCI workflow: requirement gathering, protocol design, validation, and pilot deployment. The paper stresses the importance of open‑source collaborations (OpenStack, CloudStack) for early‑stage pilots, creating a feedback loop that refines draft standards before formal ratification.

Finally, the authors analyze market‑driven standardization trends. They argue that de‑facto standards emerging from cloud federations and open‑source ecosystems often achieve faster adoption than formal standards, provided they are later harmonized with official specifications. To accelerate uptake, the paper recommends incentive mechanisms such as certification marks, cost‑sharing programs, and regulatory support.

In conclusion, the study delivers concrete, layered proposals for message, data, and VM interoperability, anchored in IEEE PCI’s governance structure, and outlines a pragmatic roadmap that blends formal standardization with market‑led initiatives. This integrated approach offers cloud providers and enterprise users a clear pathway to build interoperable, cost‑effective, and resilient multi‑cloud environments.