Use Markdown Architectural Decision Records

Context and Problem Statement

We want to record architectural decisions made in Project Thoth. Which format and structure should these records follow?

Considered Options

MADR 2.1.2 – The Markdown Architectural Decision Records
Michael Nygard's template – The first incarnation of the term "ADR"
Sustainable Architectural Decisions – The Y-Statements
Other templates listed at https://github.com/joelparkerhenderson/architecture_decision_record
Formless – No conventions for file format and structure

Decision Outcome

Chosen option: "MADR 2.1.2", because

Implicit assumptions should be made explicit.

Design documentation is important to enable people understanding the decisions later on.

See also A rational design process: How and why to fake it.
The MADR format is lean and fits our development style.
The MADR structure is comprehensible and facilitates usage & maintenance.
The MADR project is vivid.
Version 2.1.2 is the latest one available when starting to document ADRs.