4,851 research outputs found
Using Microservices to Customize Multi-Tenant SaaS: From Intrusive to Non-Intrusive
Customization is a widely adopted practice on enterprise software applications such as Enterprise resource planning (ERP) or Customer relation management (CRM). Software vendors deploy their enterprise software product on the premises of a customer, which is then often customized for different specific needs of the customer. When enterprise applications are moving to the cloud as mutli-tenant Software-as-a-Service (SaaS), the traditional way of on-premises customization faces new challenges because a customer no longer has an exclusive control to the application. To empower businesses with specific requirements on top of the shared standard SaaS, vendors need a novel approach to support the customization on the multi-tenant SaaS. In this paper, we summarize our two approaches for customizing multi-tenant SaaS using microservices: intrusive and non-intrusive. The paper clarifies the key concepts related to the problem of multi-tenant customization, and describes a design with a reference architecture and high-level principles. We also discuss the key technical challenges and the feasible solutions to implement this architecture. Our microservice-based customization solution is promising to meet the general customization requirements, and achieves a balance between isolation, assimilation and economy of scale
Threats Management Throughout the Software Service Life-Cycle
Software services are inevitably exposed to a fluctuating threat picture.
Unfortunately, not all threats can be handled only with preventive measures
during design and development, but also require adaptive mitigations at
runtime. In this paper we describe an approach where we model composite
services and threats together, which allows us to create preventive measures at
design-time. At runtime, our specification also allows the service runtime
environment (SRE) to receive alerts about active threats that we have not
handled, and react to these automatically through adaptation of the composite
service. A goal-oriented security requirements modelling tool is used to model
business-level threats and analyse how they may impact goals. A process flow
modelling tool, utilising Business Process Model and Notation (BPMN) and
standard error boundary events, allows us to define how threats should be
responded to during service execution on a technical level. Throughout the
software life-cycle, we maintain threats in a centralised threat repository.
Re-use of these threats extends further into monitoring alerts being
distributed through a cloud-based messaging service. To demonstrate our
approach in practice, we have developed a proof-of-concept service for the Air
Traffic Management (ATM) domain. In addition to the design-time activities, we
show how this composite service duly adapts itself when a service component is
exposed to a threat at runtime.Comment: In Proceedings GraMSec 2014, arXiv:1404.163
A coordination protocol for user-customisable cloud policy monitoring
Cloud computing will see a increasing demand for end-user customisation and personalisation of multi-tenant cloud service offerings. Combined with an identified need to address QoS and governance aspects in cloud computing, a need to provide user-customised QoS and governance policy management and monitoring as part of an SLA management infrastructure for clouds arises. We propose a user-customisable policy definition solution that can be enforced in multi-tenant cloud offerings through an automated instrumentation and monitoring technique. We in particular allow service processes that are run by cloud and SaaS providers to be made policy-aware in a transparent way
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