# The Twelve-Factor App

Hacker Approved page: https://hackerapproved.com/p/twelve-factor-app/

17 people recommended The Twelve-Factor App in Hacker News comments, 8 had mixed feelings and 2 criticized it, November 2025 to October 2026. It was recommended in 4 of 12 months, in 5 threads. It does not meet the Hacker Approved badge rule.

13 of the 17 people who recommend it commented in one thread, “The Twelve-Factor App (2025)”.

**Verdict:** Short, widely cited principles for deployable services that many engineers still treat as foundational, though critics say it assumes service deployments and a secure environment.

Summary written by Claude from 28 comments. It was written before the November 2026 recount, and 24 of those comments still count.

## Why people recommend it

- Still relevant good practices (4 comments in the sample): "Still incredibly relevant. Even if you don’t apply it, there is so much to learn by reading this in 15 minutes." ([source](https://news.ycombinator.com/item?id=49480314)) "it's still a really great collection of good practices that lead you to a better place" ([source](https://news.ycombinator.com/item?id=49483812)) "While this is and has always been outstanding advice" ([source](https://news.ycombinator.com/item?id=49481014))
- Foundational reference for DevOps (2 comments in the sample): "Love 12factor, evangelized it at a lot of companies too" ([source](https://news.ycombinator.com/item?id=49482149)) "I still point to this document as the base of DevOps." ([source](https://news.ycombinator.com/item?id=49490248))
- Natural, clear way to build software (2 comments in the sample): "They sound super-obvious these days, but at the time, for a lot of us, they were really nice to see." ([source](https://news.ycombinator.com/item?id=49480712)) "felt so natural and right way to do software" ([source](https://news.ycombinator.com/item?id=49480813))
- Timeless principles, classic status (2 comments in the sample): "Good principles never die, just like good music I guess." ([source](https://news.ycombinator.com/item?id=49483708)) "Imperfect but certified classic" ([source](https://news.ycombinator.com/item?id=49482753))

## What people warn about

- Oriented to service deployments only (1 comment in the sample): "but it's very service dev oriented." ([source](https://news.ycombinator.com/item?id=49482666))
- Assumes a secure environment (1 comment in the sample): "The unwritten assumption in 12 Factor is: the environment is secure" ([source](https://news.ycombinator.com/item?id=49480739))

## The badge

A product earns the Hacker Approved badge when at least 10 people recommend it, recommenders outnumber critics at least 2 to 1 (mixed feelings count toward neither side), it was recommended in at least 4 of the 12 months and in at least 5 different threads, and no single thread supplies more than half of the people who recommend it. Health and money products are never badged.

## Cite as

Hacker Approved, "The Twelve-Factor App", https://hackerapproved.com/p/twelve-factor-app/ (17 recommend, 8 mixed, 2 criticize; Hacker News comments, November 2025 to October 2026).

Counts updated 2 Nov 2026, with data through October 31, 2026.