Promo Effectiveness for Grocery on BigQuery, built for merchandising
A grocery VP Merchandising on BigQuery should not be hunting for promos problems. Ward brings up them each day.
The full picture: grocery promos, BigQuery data, Merchandising decisions
What promo effectiveness does: Ward measures true promotional lift net of cannibalization, pull-forward, and pantry loading.
In a Grocery & Supermarket fleet the job is 30,000+ SKUs across stores. Fresh availability, shrinkage, and promo effectiveness across hundreds of stores. Ward monitors perishable turn rates and flags waste before it happens.
Your category managers are drowning in spreadsheets. Ward hands back cards scoped to merchandising decision-making.
What Ward does with that: Ward isolates incremental volume from baseline, measures cross-SKU cannibalization, estimates pull-forward effects, and calculates true ROI.
Setup: Service account with BigQuery Data Viewer role. Ward runs read-only SQL queries on your schedule.
The short list
- Cannibalization quantification
- Pull-forward detection
- Promo ROI scorecards
- Net lift measurement (not gross)
Chat
Ask anything. Ward routes to the right agent and returns cited answers.
I pulled Store 37’s last 28 days against the chain baseline. Two root causes, both compounding.
| Signal | Finding |
|---|---|
labor_efficiency | Rev/labor-hour −22% vs. cluster, staffing mismatch at 11a–1p peak |
inventory.fresh | Fresh fill 83%, backroom replenishment lag at 2–4p |
promo.lift | BOGO crackers cannibalized Brand Y by 28%, net category +6% |
Recommend: re-baseline Store 37 schedule against true peak, raise replen window to 1p, and review the BOGO before next cycle.
labor_scheduling…
Reporting
Pinned views built from saved data-lake queries. Every number re-derivable from its SQL.
| Model | Horizon | MAPE |
|---|---|---|
holt_winters | 4wk | 4.1% |
arima_sarimax | 13wk | 8.9% |
gbm_demand | 1wk | 2.1% |
bayes_hier | new store | 11.4% |
Sources
Connect external systems to the data lake.
| Name | Type | Last sync |
|---|---|---|
sap_pos_transactions | import | 2m ago |
sap_inventory_shrinkage | import | 2m ago |
sap_labor_scheduling | import | 14m ago |
relex_replenishment_plan | import | 1h ago |
blue_yonder_forecast_daily | import | 1h ago |
retail_fresh_waste_daily | import | 1h ago |
retail_promo_calendar | import | 1h ago |
Policies
Browse and manage Cedar access policies for your tenant.
| Policy ID | Effect | Resources |
|---|---|---|
merch-read-default | permit | Model::* |
lp-read-shrinkage | permit | Model::"inventory_shrinkage" |
vendor-blocked | forbid | Model::"labor_*" |
fresh-team-west | permit | Model::"fresh_waste_daily" |
Why Promos matters for Grocery retail
Most grocery chains measure promotions by gross lift, ignoring cannibalization, pantry loading, and margin erosion that destroy actual ROI. Ward isolates each effect to calculate true net promotional lift, giving category managers evidence to kill underperformers and concentrate spend where it generates real incrementality.
Why this combination
is its own problem.
Promo Effectiveness behaves differently in grocery retail than it does anywhere else. The footprint shape, the SKU count, and the speed of the category all change what counts as a real signal and what is noise. Ward is tuned to the grocery version.
- 01 Vendor-funded promos look ROI-positive on margin reports because the funding offsets the visible discount, while cannibalization erodes the rest of the category.
- 02 Halo effects are credited to the wrong promo because chains run 3-5 overlapping events at any time and don't isolate which one drove what.
Benchmarks. Grocery promos typically show 30-80% gross lift but only 10-25% net incremental lift after cannibalization and pull-forward. The vast majority of promos are net-margin-positive only after vendor funding; remove the funding and roughly half lose money.
What Ward has eyes on.
Coverage is store by store, category by category. Ward keeps a running read on fill rate, shrinkage %, fresh waste % throughout 30,000+ SKUs and compares each store against its own baseline, not against the chain. That is the difference between knowing the store base is fine and knowing which seven stores are not.
Ward reads BigQuery rather than replacing it. Any BigQuery dataset, gA4 event exports, ads data transfers come across on a read-only connection, get enriched with contextual data, and come back as daily cards. Your Data Platform is untouched.
The promos model runs each day, not on a reporting calendar. It spots the pattern, traces root cause, and attaches a recommended action before the number reaches a review deck.
At the metric level. Ward decomposes promo results into gross lift, cannibalization rate, pantry loading, halo effects, and true incremental margin contribution. It also tracks promo fatigue, when repeated discounts permanently shift baseline demand downward.
What the first 90 days
actually look like.
-
01
Week 1: read-only connection
Ward sits on top of Google BigQuery with read-only credentials and begins ingesting any BigQuery dataset and gA4 event exports. No config changes on your side. First findings arrive inside the first 48 hours.
-
02
Weeks 2 to 3: baselines
Ward needs roughly two weeks of history per store to separate a real deviation from normal variance. During this window the daily cards are directionally right and the thresholds are still moving.
-
03
Weeks 4 to 12: steady state
Ward sends cards on a daily cycle, each with the cause and what to do about it. Volume settles at a level a single person can read over coffee. The measure of success is not how many cards arrive, it is how many get acted on.
How Ward connects to Google BigQuery
Ward queries BigQuery using your existing datasets. GA4 exports, POS data, CRM exports. Ward reads it where it lives.
Setup: Service account with BigQuery Data Viewer role. Ward runs read-only SQL queries on your schedule.
Data Ward reads from BigQuery
Impact metrics with BigQuery
Data lake enrichment
Ward enriches BigQuery data with: Any BigQuery dataset, GA4 event exports, Weather & events, Demographics, Custom feeds
Your category managers are drowning in spreadsheets.
- ×Promo planning still runs off last year's playbook
- ×Assortment reviews happen quarterly when they should happen daily
- ×Price changes chase the market a week behind it
- ×No visibility into true cannibalization across categories
- ×Vendor negotiations lack real-time sell-through evidence
- ✓Insight cards flag promo cannibalization the day it happens
- ✓Assortment gaps and whitespace opportunities surface automatically
- ✓Price elasticity shifts detected before margin erosion compounds
- ✓Category-level performance cards replace manual spreadsheet reviews
- ✓Vendor scorecards generated from actual fill rate and quality data
Retailers lose an estimated $300B+ annually to suboptimal assortment and promotional decisions. Source: McKinsey & Company
Grocery KPI impact
Frequently asked questions
Ward measures true promotional lift net of cannibalization, pull-forward, and pantry loading. For Grocery retail specifically, Ward monitors 30,000+ SKUs across your stores and delivers automated insight cards with root cause analysis and recommended actions.
Ward tracks Fill rate, Shrinkage %, Fresh waste %, Promo lift, Basket size at the store-category level. Ward isolates incremental volume from baseline, measures cross-SKU cannibalization, estimates pull-forward effects, and calculates true ROI.
Service account with BigQuery Data Viewer role. Ward runs read-only SQL queries on your schedule. Data points include: Any BigQuery dataset, GA4 event exports, Ads data transfers, Custom ETL outputs.
Yes. Ward reads BigQuery data and combines it with contextual signals (weather, events, demographics) to generate Grocery-specific insight cards. No custom development required.
Your category managers are drowning in spreadsheets. Ward solves this with automated insight cards: Insight cards flag promo cannibalization the day it happens. Assortment gaps and whitespace opportunities surface automatically. Price elasticity shifts detected before margin erosion compounds.
Ward delivers daily insight cards covering Fill rate, Shrinkage %, Fresh waste %, tailored for Merchandising decision-making. Each card includes what changed, why it matters, and what to do next.
Ward decomposes promo results into gross lift, cannibalization rate, pantry loading, halo effects, and true incremental margin contribution. It also tracks promo fatigue, when repeated discounts permanently shift baseline demand downward.
A major snack vendor proposes a co-op BOGO program across 12 SKUs. Gross lift looks strong, but Ward shows net category lift is minimal after accounting for cannibalization and pantry-loading pull-forward. Several SKUs generate negative net category contribution. Ward provides SKU-level promo scorecards the category manager uses to restructure the deal around the SKUs with genuine incremental lift.
First insight cards arrive within 48 hours of data connection. Ward needs approximately 2 weeks to establish stable baselines for your specific operation.
No. Ward sits on top of your existing stack. It is the proactive intelligence layer that watches your data continuously and delivers insight cards, so your team acts on findings instead of hunting for them.
Related solutions
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Root causes, not just alerts. See it on your data.
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