What does response mean in software engineering?

In software engineering, a response is the data or message that a server or system returns after processing a request. It includes the actual data (response body), status information (response code), and metadata (response headers). For example, when you call an API, the response tells you whether the request succeeded and contains the information you asked for.

How is a response different from a request?

A request is what the client (you) sends to the server asking it to do something. A response is what the server sends back. Think of it like email: you send a request (email), and you receive a response (reply). Requests go out; responses come back.

What are common HTTP response codes and what do they mean?

Common HTTP response codes include: 200 (OK - request succeeded), 201 (Created - resource was created), 400 (Bad Request - request was malformed), 401 (Unauthorized - authentication required), 404 (Not Found - resource does not exist), and 500 (Internal Server Error - server error). These codes tell you immediately whether your request worked.

Is response formal or informal?

Response is neutral and formal enough for professional technical settings. It is the standard term used in documentation, code, and engineering discussions. You can use it in any tech context without sounding casual or too formal.

response meaning in tech — Speak Tech English

Commonness	5/5
Versatility	5/5
Formality	CasualFormalNeutral
Spoken ↔ Written	SpokenWrittenBoth
Directness ↔ Diplomatic	DirectDiplomaticDirect
Region	US and UK

Say it like this

✓The API response came back with a 200 status code

✓We need to handle the response asynchronously

✓The server response took too long

✓Check the response headers for errors

Real examples

in a standup

"We fixed the bug where the API response was not being parsed correctly."

in a code review

"Make sure you validate the response structure before accessing the data fields."

in a team meeting

"The database response time has improved since we added the cache layer."

in a Slack message

"Did you get a response from the third-party service yet?"

Don't say this

Handle with care. Often confused with reply or answer. Response is more technical and refers to data returned by a system, while reply/answer refer to human communication.

✕The server response us with the data.

✓The server sent us a response with the data.— Response is a noun, not a verb. You cannot response something.

✕We got a good response from the API.

✓We got a successful response from the API (or a 200 response).— Response refers to the data returned, not whether it is good or bad. Be specific about status codes.

✕The response of the request is missing.

✓The response to the request is missing.— Use the preposition to, not of, when talking about response to a request.

Other forms

noun

response

"The API response included user data."

noun

responses

"We logged all the responses from the server."

adjective

response (in compounds)

"The response time was 200 milliseconds."

Often used with

HTTP responseA response from a web server using the HTTP protocol

API responseData returned by an application programming interface

response code/statusThe number (like 200, 404, 500) indicating the result of a request

response timeHow long it takes for a system to return a response

response bodyThe actual data content of a response

response headersMetadata about the response

Similar words

outputMore general term for what a system produces; response is more specific to requests

replyOften used for human communication; response is broader and more technical

resultGeneral outcome; response refers specifically to what is returned to a request

Opposites

request

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Practice

Try it

4 quick exercises

Pick the most natural phrasing

1. A colleague asks you to check what the server returned. How do you say it?

Check the response from the server.Check what the server response.Check the server is responding.Check the response to server.

Complete the sentence

2. The API _______ included all the user information we needed.

Spot the mistake

3. Which sentence uses response incorrectly?

We received a 404 response from the server.The response time exceeded our threshold.We need to response the client quickly.Check the response body for errors.

Rewrite naturally

4. Rewrite in tech English: 'The thing that came back from the database had the wrong format.'

Questions

Quick poll

Have you said "response" in a standup this week?

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