I absolutely agree, but you’re talking about a situation where we already have 10 different ways and 20 EC2 instances. When you get to that point (or start approaching it), yeah, do the complex thing - no argument at all. The challenge is to wait until the last responsible moment to make that pivot and to not dive deeper into the complexity than you need at the current time and place. I’ve worked with countless small companies and teams in the past that have created whole K8s clusters, Terraform provisioning plans, and the whole kit for a single low volume service because “we’ll need it when things scale out later” and later never arrives.

This is great until

I think that’s the point. Don’t jump to the complex right away. Keep it simple and compose the capabilities you have readily available until you need to become more complex. When the task requires it, yeah, do the complex thing, but keep the simplicity mandate in mind and only add the new complexity that you need. You can get pretty far with the simple, and what about all of the situations where that future pivot or growth never happens?

The philosophy strikes a cord with me - I’m often contending with teams that are building for the future complexities that they think might come up, and we realize later that we did get complexity in the problem later, but not the kind we had planned for, so all of that infrastructure and planning was wasted on an imaginary problem that no only didn’t help us but often actually make our task harder. The trick is to keep the solution set composable and flexible so that if complexity shows up later, we can reconfigure and build the new capabilities that we need rather than having to maneuver a large complicated system that we built on a white board before we really knew what the problem looked like.

That is the specific app the person I replied to was asking about, so yea. Would have been a little weird if I was talking about some other app.

Mostly. The 6 digit standard ones that you see almost everywhere are standard TOTP codes and most apps work for them. There are some proprietary things out there too but you typically see those with a matching app from the same company. Those are far less common though so for practical reasons you can assume they are all interchangeable.

Those values are computed separately what the app is really storing is just the input values which are then combines with the current time to create the 6 digit code. That means that keeping that input value (seed) safe is a big deal, and how and where that is done is one of the major differentiators between the various options.

Google Auth works just fine. The standard for app generated 2FA is, well, standard. They’re only listing a non-complete list of options for people that don’t know what an authenticator app is and need to get one for the first time.

Too many people were making poor choices. When there’s an incident of an account that should have been secured but wasn’t getting compromised, that’s bad for the platform, ecosystem, and community. This is just another level beyond not allowing you to set a password of “password”