---
template: adr
version: 2
---
<!--
Architecture decision record. Any architect writes one for a decision with lasting impact;
the decision maker named in the profile decides. Save as
docs/architecture/decisions/NNNN-short-title.md, numbered after the highest file there, and add a row to its README.md.
An ADR is never edited after it is accepted, except its Status line: a changed mind is a
new ADR that supersedes this one. Delete these comments.
-->
---

# NNNN. <Decision, as a short imperative: "Keep the monolith for billing">

| | |
|---|---|
| Status | Proposed / Accepted / Superseded by NNNN / Rejected |
| Date | <yyyy-mm-dd> |
| Decision type | Strategy / Investment / Technology / Design (EA playbook) |
| Proposed by | <architect> |
| Decided by | <decision maker> |
| Related | the design, outline, threat model or brief that raised it |
| Template | adr v2 |

## Context

The forces at play, in a few sentences: the business need, the constraint, what is true
today (cite `file:line` or a doc). Neutral; no recommendation yet.

## Options considered

| Option | What it delivers | Cost (money, team time) | Risk | Lock-in, reversibility |
|---|---|---|---|---|
| A | | | | |
| B | | | | |

## Decision

The option chosen, in one or two sentences, and why it beat the others.

## Consequences

What becomes easier, what becomes harder, what we now must do (follow-up work with
owners), and which landscape, standard or view changes.

## Revisit when

The trigger that would reopen this: a volume, a cost, a regulation, a vendor change, a
date.