The technology acceptance model
Fred D. Davis · 1989Also known as TAM (technology acceptance)
Whether people use a new system depends mainly on whether they think it will help them and whether they think it will be easy.
Davis separated perceived usefulness from perceived ease of use and found usefulness to be the stronger of the two: people will put up with a difficult system that clearly helps, but not an easy one that does not. For anyone introducing technology it shifts the question from features to what the user believes the system will do for their own work.
- Reach for it when
- When a system has been implemented on time and budget and nobody is using it, and before choosing a tool on the strength of its feature list.
- Where it stops
- It predicts intention to use from a few beliefs and leaves out social pressure, habit and whether use is compulsory, which later versions tried to add. It explains adoption, not whether the technology was worth adopting.
Fred D. Davis, “Perceived Usefulness, Perceived Ease of Use, and User Acceptance of Information Technology”, MIS Quarterly, 1989.
The NIST Cybersecurity Framework
National Institute of Standards and Technology · 2014Also known as NIST CSF
A common structure for managing cyber risk, organised around what an organisation must be able to do before, during and after an incident.
It groups security work into a few functions — identifying what needs protecting, protecting it, detecting attacks, responding and recovering — and the 2024 revision added governing as a function of its own. Its main value is as a shared map: it lets management, technical staff and suppliers describe their position and their gaps in the same terms.
- Reach for it when
- When security is discussed only in terms of tools, and when the board asks how exposed the company is and nobody can answer in business terms.
- Where it stops
- It says what to cover, not how much is enough or which controls to buy. It was written for US critical infrastructure and needs translating for a small company’s scale and risks.
National Institute of Standards and Technology, Framework for Improving Critical Infrastructure Cybersecurity, 2014; The NIST Cybersecurity Framework 2.0, 2024.
The TOGAF Standard
The Open Group · 1995Also known as TOGAF, The Open Group Architecture Framework
A method for describing how a business, its information and its technology fit together, and for changing that fit deliberately.
At its centre is a repeating cycle for developing an enterprise architecture: understanding the business, then data and applications, then technology, then planning how to move from the current state to the target one. Its value is in making the connections explicit, so a technology decision can be traced back to a business need and forward to what it will affect.
- Reach for it when
- When systems have accumulated one project at a time and nobody can say how they fit together, and before a large change that will touch many of them at once.
- Where it stops
- It is large and generic, and adopted in full it can produce architecture documents faster than decisions. Most organisations use a small part of it, and small companies may need little of it at all.
The Open Group, TOGAF, first version 1995; The TOGAF Standard, 10th edition, 2022. TOGAF is a registered trademark of The Open Group and is named here only to refer to its work.
Wardley mapping
Simon Wardley · 2005Also known as Wardley maps
Map what a user needs, the components that serve it, and how far each component has evolved from novel to commodity.
Components are placed by how visible they are to the user and by how mature they are — from newly invented, through custom-built and product, to utility. The insight is that the right way to handle a component depends on where it sits: invent the novel parts, buy or rent the commodities, and expect everything to drift towards commodity over time.
- Reach for it when
- When deciding what to build, buy or outsource, and when a company is spending engineering effort on something the market already sells as a utility.
- Where it stops
- Placing components on the evolution axis is a judgement that different people make differently. The map is only as good as the conversation that produced it.
Simon Wardley, Wardley Maps: Topographical Intelligence in Business, published openly under a Creative Commons licence from 2016; developed from 2005.
These are other people’s models, named here so you can go to the source and use them properly. The Omnigoal is not affiliated with their authors and is not endorsed by them; nothing of theirs is reproduced here — no canvas, no diagram, no wording. Each is described in our own words, with the originator credited, because the framework is a place to put thinking, not a replacement for the people who did it. Model names and trademarks belong to their respective owners and are used here only to refer to the work itself.