Last updated on March 22nd, 2018 at 11:18 pm
When the owner of an asset, especially a software asset, contracts to provide a capability to a customer incorporating a use of that asset, the work involved might require modification or enhancement of that asset. When the contract permits such work, without transferring ownership of the asset itself, performing it is relatively straightforward, provided the work can be done in a manner compatible with any pre-existing or anticipated future other uses of the asset. But some contract restrictions can cause the owner of the asset to incur technical debt.
But some contracts restrict such work. For example, for a government customer, ownership of the work performed might be required to transfer to the government customer. Potentially, all of the work might be classified as a national secret. In either of these cases, to retain control of the asset, the owner/contractor arranges to perform all of the work outside the periphery of the asset. To accomplish this, the owner/contractor might interface to the asset through an adaptor that can be transferred to the government customer, or which can be classified as secret as the case may be, thereby insulating the original asset from these ownership restrictions.
The result is tolerable after one such contract is completed. But over time, as the number of adaptors increases, they become a form of technical debt. Each must be maintained against any changes in the original asset. Moreover, making changes to the original asset can become a project of such scale that the temptation to create a static “clone” of the asset for each customer is irresistible. When that happens, any technical debt already present in the asset is also cloned. And any work performed to correct defects in the asset must be performed on each affected clone.
The problem is more general than suggested above. It also appears in the case of software offered for multiple platforms, or multiple versions of a single platform.
But it gets worse. Suppose the maintainers decide to update the asset to make it more extensible, or to make it more maintainable. That update, including all testing and documentation, must then be performed on each clone. If the asset owner elects not to update all clones, then the clones will begin to diverge from each other. Engineers performing tasks on one of the clones must then have knowledge of how it differs from other clones. If a new defect is discovered, it might or might not be present in every clone. Implementing a new extension or other modification might not be possible in all clones, or it might have to be implemented differently in some clones. Life can get very complicated.
Organizations entering into contracts of this kind would be wise either to include language limiting their obligations to maintain the original asset against any changes, internal or external, in its ability to perform its functions. Or they might include an explicit statement of the parties’ intentions relative to financial support for any continuing obligations to maintain that asset.
Organizations offering products for multiple platforms would be wise to consider as strategic the management of technical debt that arises from platform multiplicity. Sound management of this form of technical debt can extend their ability to support multiple platforms, which can dramatically increase returns on investment in the core asset.
- Nontechnical precursors of non-strategic technical debt
- Failure to communicate long-term business strategy
- Failure to communicate the technical debt concept
- Technological communication risk
- Team composition volatility
- The Dunning-Kruger effect can lead to technical debt
- Self-sustaining technical knowledge deficits during contract negotiations
- How performance management systems can contribute to technical debt
- Zero tolerance and work-to-rule deliveries create an adversarial culture
- Stovepiping can lead to technical debt
- Unrealistic definition of done
- Separating responsibility for maintenance and acquisition
- The fundamental attribution error
- Feature bias: unbalanced concern for capability vs. sustainability
- Unrealistic optimism: the planning fallacy and the n-person prisoner’s dilemma
- Confirmation bias and technical debt
- How outsourcing leads to increasing technical debt
- How budget depletion leads to technical debt
- Organizational psychopathy: career advancement by surfing the debt tsunami
- The Tragedy of the Commons is a distraction
- The Broken Windows theory of technical debt is broken
- Malfeasance can be a source of technical debt