---
id: ADR-COM-CAT-007
title: Selecting and Allocating Promotion Benefits
product_area: commerce
module: catalog
revision: 1
status: proposed
design_intent: confirmed
source_sha:
  services-commerce: c8b66a98e2490617aec38ba5c8165dd9bd0a8f9b
  react-console: baf6dae382d6f41dce976c7f848667ccc37e076f
decision: >-
  Promotion assessment compares permitted audience and Standard alternatives and selects the lowest allowed
  total.
constrains:
  - DOM-COM-CAT-005
  - SVC-COM-CAT-promotions
  - WF-COM-CAT-014
  - WF-COM-CAT-016
origin: COMM-M1 D12 with clarifications Q1 to Q7 and D12-F1 to D12-F4
alternatives:
  - option: Apply campaigns once in fixed entry order
    why_not: That can miss a less expensive permitted alternative.
  - option: Always apply campaigns to the audience amount
    why_not: Noncombining campaigns use Standard as their basis instead.
consequences:
  - >-
    The first four competing noncombining or exclusive campaigns have bounded combination search; later
    candidates are tested individually.
  - Equal totals retain audience pricing without taking a code use.
  - The explanation identifies a better audience or automatic-campaign outcome.
supersedes: []
evidence:
  - >-
    services-commerce at c8b66a98: modules/promotions/services/pricing/alternatives.ts, stacking.ts,
    allocation.ts; docs/milestones/decisions/COMM-M1-D12-evaluation-algorithm.md.
  - >-
    services-commerce at c8b66a98: docs/milestones/COMM-M1-set-up-what-you-sell.md (Decisions);
    docs/milestones/plans/COMM-M1-plan.md.
---

# Selecting and Allocating Promotion Benefits

## Context

Audience discounts and campaign benefits can compete or combine. The configured combination rules determine the candidates that assessment may compare.

## Decision

Promotion assessment compares permitted audience and Standard alternatives and selects the lowest allowed total.

## Alternatives Considered

Apply campaigns once in fixed entry order. That can miss a less expensive permitted alternative.

Always apply campaigns to the audience amount. Noncombining campaigns use Standard as their basis instead.

## Consequences

The first four competing noncombining or exclusive campaigns have bounded combination search; later candidates are tested individually. Equal totals retain audience pricing without taking a code use. The explanation identifies a better audience or automatic-campaign outcome.