A Survey on Blockchain & Cloud Integration

Abstract

Blockchain is one of the emerging technologies with the potential to disrupt many application domains. Cloud is an on-demand service paradigm facilitating the availability of shared resources for data storage and computation. In recent years, the integration of blockchain and cloud has received significant attention for ensuring efficiency, transparency, security and even for offering better cloud services in the form of novel service models. In order to exploit the full potential of blockchain-cloud integration, it is essential to have a clear understanding on the existing works within this domain. To facilitate this, there have been several survey papers, however, none of them covers the aspect of blockchain-cloud integration from a service-oriented perspective. This paper aims to fulfil this gap by providing a service oriented review of blockchain-cloud integration. Indeed, in this survey, we explore different service models into which blockchain has been integrated. For each service model, we review the existing works and present a comparative analysis so as to offer a clear and concise view in each category.

Blockchain‐cloud integration: Comprehensive survey and open research issues

“…Soumik Sarker et al [12] presented a review on Blockchaincloud integration services. In this survey, the authors studied the industrial approaches and research approaches of "Blockchain as a service" technology, but they did not mention the mechanisms and protocols necessary to show the effectiveness of this technology.…”

Anomaly Detection in Blockchain Networks Using Unsupervised Learning: A Survey

“…So far, several survey papers have been published to encircle the applications of blockchain technologies in various research areas such as cloud computing [4,44], database systems [45], digital twins [46,47], educational technologies [48], e-voting development [49], interoperability [50], smart contracts [51][52][53], internet of things (IoT) [54][55][56][57][58][59][60], and more. In addition, a large number of surveys address issues related to system security, cybersecurity, and privacy of blockchain frameworks [26,[61][62][63][64][65][66][67][68][69].…”

“…A blockchain network constitutes a decentralized software application dedicated to the perpetual maintenance of an expanding ledger of blocks of transaction information that enables the development of public or private distributed networks without the presence of a central controlling organization, supporting secure transaction strategies based on cryptographic mechanisms [1][2][3][4]. Each block includes, among others, data related to several transactions that were gathered within a certain period, a timestamp, and a unique hash value [1,4,5]. A cryptographic hash value prudently identifies each block, which also dutifully references the hash of the block that precedes it.…”

“…The transaction verification process is called the consensus mainly due to the requirement that the users' majority must agree upon its validity [8,18,19]. In terms of consensus, three general types of blockchain systems have arisen, namely, public, consortium, and private networks [1,4,11,18,[20][21][22]. A public blockchain allows everyone to join the network as a user either to perform transactions or to participate in the consensus process, whereas in a consortium network, the consensus mechanism is decided by a preselected set of users.…”