# Factor 3: Config

[This section](http://www.12factor.net/config) advises using environment
variables for everything.

> [Owen J](https://twitter.com/derspiny): I think I disagree with
> 12factor's conclusions on config even though I agree with the premises
> and rationale in general
>
> [Owen J](https://twitter.com/derspiny): environment variables
> are neither exceptionally portable, exceptionally standard, nor
> exceptionally easy to manage
>
> [Owen J](https://twitter.com/derspiny): and therefore should not be
> the exceptional configuration mechanism :)
>
> [Kit L](https://twitter.com/wlonk): that's exactly the critique i have