The Software-as-a-Service delivery model bears new challenges for application developers. Especially in the context of enterprise resource planning software targeting the SME market, new problems arise. Most of them agglomerate around the occurrence of multi-tenancy. This paper describes the framework MapperMania which aims to establish an abstraction layer between the persistence layer and the...

Multi-tenancy is a relatively new software architecture principle in the realm of the Software as a Service (SaaS) business model. It allows to make full use of the economy of scale, as multiple customers – “tenants” – share the same application and database instance. All the while, the tenants enjoy a highly configurable application, making it appear that the application is deployed on a dedic...

Software as a service is frequently offered in a multi-tenant style, where customers of the application and their end-users share resources such as software and hardware among all users, without necessarily sharing data. It is surprising that, with such a popular paradigm, little agreement exists with regard to the definition, domain, and challenges of multi-tenancy. This absence is detrimental...

Software-as-a-Service is a delivery model whose basic idea is to provide applications to the customer on demand over the Internet. SaaS thereby promotes multi-tenancy as a tool to exploit economies of scale. This means that a single application instance serves multiple customers. However, a major drawback of SaaS is the customers’ hesitation of sharing infrastructure, application code, or data ...

Short-term land rental agreements such as the traditional conacre system in Northern Ireland offer flexibility between landowners and farmers renting land. However, uncertainty of tenure linked to short-term systems does not allow for make longer-term investment planning decisions, particularly around sustainable management practices. Long-term tenancy have been identified a viable option cope ...

While the regulation of tenancy arrangements is widespread in the developing world, evidence on how such regulation influences the long-run allocation of land and labor remains limited. To provide such evidence, this paper exploits quasi-random assignment of linguistically similar areas to different South Indian states and historical variation in landownership across social groups. Roughly thir...

Network Slicing is expected to become a game changer in the upcoming 5G networks and beyond, enlarging telecom business ecosystem through still-unexplored vertical industry profits. This implies that heterogeneous service level agreements (SLAs) must be guaranteed per slice given multitude of predefined requirements. In this paper, we pioneer novel radio slicing orchestration solution simultane...

Multi-tenant applications serve different customers with one application instance. This architectural style leverages sharing and economies of scale to provide cost efficient hosting. As multi-tenancy is a new concept, a common definition of the word and related concepts is not yet established and the architectural concerns are not fully understood. This paper provides an overview of important ...

Why multi-tenancy is key to successful and sustainable softWare-as-a-service (saas)