IT Glossary
What is JSON?
JavaScript Object Notation: the simple, universal text format applications use to send each other data — the common tongue of integrations.
When two applications talk — a store requesting a shipping label, an invoicing tool submitting documents to a government e-invoicing platform, a website loading its product list — the messages almost always travel in one format: JSON, a way of writing structured data as plain text readable by machines and humans alike: key-value pairs and lists, nested as needed — {"client": "Acme Ltd", "total": 1250, "items": [...]}. It won the format wars through simplicity (its predecessor XML was heavier and noisier) and is today the lingua franca of web APIs, configuration files and many data exports. Why a businessperson benefits from recognizing it: JSON is the concrete shape a good answer takes when you ask a vendor "give us our data." At integration time, the supplier exposing a documented JSON API is the supplier who is easy to work with; at export time, data delivered as JSON (or CSV) remains reusable in any future system, whereas a PDF is a photograph of data, not data. And when a developer shows you "what the API returns," that structure with curly braces is legible to non-specialists too — a small but useful piece of transparency in technical conversations where you would otherwise have only the vendor's word.
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Why it matters for your business
The common language of integrations
Every modern system speaks JSON — connecting your applications does not stumble over conversions between exotic formats.
Data humans can read too
The key-and-value structure reads with the naked eye — debugging integrations and checking data requires no special tools.
Exports that are actually data
Information received as JSON imports anywhere, today and in five years — unlike a PDF, which is merely its photograph.
Frequently asked questions
JSON or XML — does the difference still matter?
For new systems, JSON has won almost everywhere; XML survives in established standards — including many national e-invoicing formats and older enterprise exchanges. In practice your applications will speak both where context demands, and your takeaway is simply that both are structured data — the good thing.
Can I open a JSON file without technical knowledge?
Yes — it is plain text: any editor displays it, and browsers plus free online viewers format it nicely with collapsible sections. For large files or transformations such as JSON to Excel, conversion tools abound; the data is never captive.
Why do developers ask suppliers for "JSON examples" during integrations?
A real sample response is worth ten pages of description: it shows exactly which fields exist, how they are named and how values are formatted — the integration is built and tested against it. A supplier unable to produce examples and API documentation is announcing the quality of the collaboration in advance.
Let’s talk about your project
Message us on WhatsApp or send an email — you talk directly to a developer.
office@northdan.com · +40 752 070 247