JSON is a plain-text format two systems use to pass information back and forth in a shape both sides understand: labels, values, lists, and nested details. The punctuation is strict, but the idea is simple. Label, value. Label, value. A record might say the client name is “Atlas,” the invoice amount is 1200, and the paid status is false.
An office intake form works the same way. The labels (name, email, company, status) tell you what each answer means, and if everyone uses the same form, the office processes it quickly. JSON is that kind of form, built for software instead of people.
Why you care
You’ll see JSON everywhere around APIs: one system asks another for data, and the answer usually comes back as JSON. An agent might call your CRM and receive a customer record, or call an MCP server and get structured results. Software needs to know which part is the email and which is the status, and a schema defines that expected shape. (YAML frontmatter is a different structured text format with different punctuation.) When you click a button in a clean app, JSON is often what’s moving underneath.