Architectural Decision Records

FxA records major architectural decisions in an ADR format. An ADR is needed whenever there are multiple viable options to pursue that will require a significant engineering effort. Please find FxA ADRs in the FxA repository:

• https://github.com/mozilla/fxa/blob/main/docs/adr

Before we used ADRs, we also archived our feature design documentation. It's still available online as well:

• https://github.com/mozilla/fxa-archive/tree/master/features