Case: Explaining API in Plain English
This case shows how I explain a technical concept to a non-technical audience in English.
Task
Explain what an API is in a short, clear way. The audience is a regular computer user who understands basic digital terms but does not work in software development.
Approach
- Keep the definition short.
- Avoid unnecessary details about HTTP, JSON, methods, and endpoints.
- Use a familiar product scenario.
- Keep the explanation accurate: an API is not an app itself, but a set of rules for interaction between systems.
Plain English Version
An API is a set of rules that lets different apps talk to each other and exchange data.
For example, imagine you type an address in a delivery app. After a few letters, the app shows a list of matching streets. The delivery app does not store every address by itself. It sends a request to another system that has address data.
The request is simple in meaning: “Find addresses that start with these letters.” The other system sends back a list of options.
The rules that describe how to send the request, what data to include, and how to read the answer are the API.
Why This Works
| What the reader needs | How the text solves it |
|---|---|
| Understand the term quickly | The definition is in the first sentence |
| See a familiar use case | The example uses address search in a delivery app |
| Avoid technical overload | The text does not start with protocols, methods, or data formats |
| Keep the meaning accurate | API is described as rules for interaction between systems |
Where This Format Works
This format can be used for:
- help center articles;
- onboarding materials for new employees;
- short introductions before API reference;
- explanations for non-technical stakeholders.