New paper: “Software Sustainability: Research and Practice from a Software Architecture Viewpoint”

Today we had a paper published in Elsevier’s Journal of Systems and Software, entitled: Software Sustainability: Research and Practice from a Software Architecture Viewpoint. This paper builds upon previous work with international colleagues looking at sustainability in the context of software architectures, presenting an overview of software sustainability approaches and trends, the challenges and insight on current software sustainability research, as well as a perspective of sustainability academy research and practice.

The abstract of the paper is below; you can read the full paper (published online as an “In Press, Accepted Manuscript”):

Software Sustainability: Research and Practice from a Software Architecture Viewpoint

Colin C. Venters, Rafael Capilla, Stefanie Betz, Birgit Penzenstadler, Tom Crick, Steve Crouch, Elisa Yumi Nakagawa, Christoph Becker and Carlos Carrillo


Modern societies are highly dependent on complex, large-scale, software-intensive systems that increasingly operate within an environment of continuous availability, which is challenging to maintain and evolve in response to the inevitable changes in stakeholder goals and requirements of the system. Software architectures are the foundation of any software system and provide a mechanism for reasoning about core software quality requirements. Their sustainability — the capacity to endure in changing environments — is a critical concern for software architecture research and practice.


Accidental software complexity accrues both naturally and gradually over time as part of the overall software design and development process. From a software architecture perspective, this allows several issues to overlap including, but not limited to: the accumulation of technical debt design decisions of individual components and systems leading to coupling and cohesion issues; the application of tacit architectural knowledge resulting in unsystematic and undocumented design decisions; architectural knowledge vaporisation of design choices and the continued ability of the organization to understand the architecture of its systems; sustainability debt and the broader cumulative effects of flawed architectural design choices over time resulting in code smells, architectural brittleness, erosion, and drift, which ultimately lead to decay and software death. Sustainable software architectures are required to evolve over the entire lifecycle of the system from initial design inception to end-of-life to achieve efficient and effective maintenance and evolutionary change.


This article outlines general principles and perspectives on sustainability with regards to software systems to provide a context and terminology for framing the discourse on software architectures and sustainability. Focusing on the capacity of software architectures and architectural design choices to endure over time, it highlights some of the recent research trends and approaches with regards to explicitly addressing sustainability in the context of software architectures.


The principal aim of this article is to provide a foundation and roadmap of emerging research themes in the area of sustainable software architectures highlighting recent trends, and open issues and research challenges.

DOI: 10.1016/j.jss.2017.12.026

(also see: Publications)

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