How to Create and Maintain Technical Documentation for Small to Complex Projects

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Trevor Wencl
Software Architect
A laptop with a file cabinet on the screen with documentation on it.

There are many types of documentation in the software world. Of these, technical documentation is one of the most frequently neglected.

The fast-paced nature of the industry leads to the conception that time spent documenting is time lost developing and delivering features. Over time, a development team’s documentation debt (a type of technical debt) can build to a point where the idea of tackling it becomes daunting. As a project scales and teams experience churn, information can become siloed or even lost. This can then impact the efficiency of the team. On the flip side, well-documented projects are more likely to run smoothly, especially at scale.

In this article, we’ll discuss the importance of technical documentation, why it is often neglected, and the impact it can have on development teams.

Table Of Contents

Why Projects Need Technical Documentation

Common tasks and important concepts explained by the docs don’t require one-on-one conversations for knowledge transfer, making things like onboarding and process management easier. Projects become resilient to unexpected turnover since technical documentation lets knowledge reside within a project, not within the individuals currently working on it. If a team member leaves, typically their knowledge goes with them, but this isn’t the case when things are properly documented. Well-documented projects are also more attractive from an acquisition perspective, and the technical documentation can assist in the associated due diligence process.

The core misconception is that writing software documentation is difficult or time-consuming. When done correctly, it’s straightforward to write and returns multiples on effort in terms of time saved. 

The benefits of using technical documentation for your project.

The Risk of Not Having Technical Documentation

Every project has a lead or senior developer that knows the ins and outs of the system like no other. These are the people that have been part of the project since the very first line of code, or that have been working on it for a long period of time. They are incredible assets, with the ability to see both the bigger picture as well as the details and help the team navigate the codebase.  

Originally published on Oct 5, 2020Last updated on Jan 4, 2024

Key Takeaways

What is technical documentation?

Technical documentation is a type of documentation that describes the technical aspects of a product or service. It includes any written materials, such as manuals, user guides, whitepapers, technical specifications, and help files, that provide information on how to use or operate a product or service.

What should good technical documentation include?

Good technical documentation should include information on source control, hosting, deployment, development environment setup, and important services and credentials. It's crucial to have these topics documented for the smooth operation of the project and to enable new team members to quickly understand the system.

What are examples of technical documentation?

Some common examples of technical documentation include user manuals that provide instructions on how to use a product or service, technical specifications that provide detailed information about the technical aspects of a product or service, API documentation that provide information on how to use an API, release notes that provide information on changes and updates to a product or service, and whitepapers that provide in-depth information on a particular topic or technology.