Modern Data Stack Auditor

Your stack has risks
you haven't
spotted yet.

Data teams inherit decisions they didn't make. Tools that worked at 10 GB break at 10 TB. Vendors that seemed neutral lock you in. Answer 3 questions about your stack — get a severity-rated risk report.

Audit my stack →

Free access code works 5×/day — get one via LinkedIn if you hit the limit.

Sample outputs

What the tool actually produces

Risk Profile · Cost
Your stack risk report
Cost leakage risk is high across Fivetran MAR pricing, Snowflake idle warehouses, and dbt full-refresh patterns. A small team amplifies exposure.
↓ Download report
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Fivetran Pricing Model
Critical
Fivetran charges per Monthly Active Row; high-churn event log tables cause explosive MAR counts and unpredictable bills.
RecommendationAudit connector MAR reports monthly; switch high-volume event tables to HVA pricing or replace with Airbyte.
Snowflake Idle Warehouses
Critical
Default warehouses lack auto-suspend, burning credits during Airflow scheduling gaps and BI idle periods around the clock.
RecommendationSet auto-suspend to 60 seconds on all warehouses; use separate XS warehouses for dbt, BI, and ingestion loads.
dbt Full-Refresh Scans
High
dbt incremental models misconfigured as table materializations trigger full warehouse scans on every Airflow run.
RecommendationAudit dbt materializations; enforce incremental models with unique_key on all fact tables over 1 GB.
Power BI DirectQuery Mode
High
Power BI DirectQuery issues per-visual Snowflake queries, causing continuous credit burn during every report interaction.
RecommendationSwitch all Power BI datasets to Import mode with scheduled refresh; eliminates ad-hoc Snowflake compute costs.
1
Enable auto-suspend (60s) and auto-resume on every Snowflake virtual warehouse.
2
Pull Fivetran MAR report and pause connectors unused in the last 30 days.
3
Switch Power BI reports from DirectQuery to Import mode with daily refresh.
Risk Profile · Cost
Your stack risk report
Cost leakage risk is high across Fivetran MAR pricing, Snowflake idle warehouses, and dbt full-refresh patterns. A small team amplifies exposure.
↓ Download report
Start over
Fivetran Pricing Model
Critical
Fivetran charges per Monthly Active Row; high-churn event log tables cause explosive MAR counts and unpredictable bills.
RecommendationAudit connector MAR reports monthly; switch high-volume event tables to HVA pricing or replace with Airbyte.
Snowflake Idle Warehouses
Critical
Default warehouses lack auto-suspend, burning credits during Airflow scheduling gaps and BI idle periods around the clock.
RecommendationSet auto-suspend to 60 seconds on all warehouses; use separate XS warehouses for dbt, BI, and ingestion loads.
dbt Full-Refresh Scans
High
dbt incremental models misconfigured as table materializations trigger full warehouse scans on every Airflow run.
RecommendationAudit dbt materializations; enforce incremental models with unique_key on all fact tables over 1 GB.
Power BI DirectQuery Mode
High
Power BI DirectQuery issues per-visual Snowflake queries, causing continuous credit burn during every report interaction.
RecommendationSwitch all Power BI datasets to Import mode with scheduled refresh; eliminates ad-hoc Snowflake compute costs.
1
Enable auto-suspend (60s) and auto-resume on every Snowflake virtual warehouse.
2
Pull Fivetran MAR report and pause connectors unused in the last 30 days.
3
Switch Power BI reports from DirectQuery to Import mode with daily refresh.

Most data stacks accumulate risk
faster than they accumulate data.

Nobody sets out to build a fragile stack. It happens gradually — one vendor contract, one undocumented transform, one "we'll fix it later" decision at a time.

🔒

Vendor lock-in you didn't see coming

The tool that solved one problem quietly became load-bearing. Now migrating off it would take six months and a rewrite of half the pipeline.

📉

Scale assumptions that no longer hold

The architecture made sense at your current volume. But the thresholds — full refreshes, sync frequency, warehouse credits — were never tested against what growth actually looks like.

💸

Cost traps hiding in plain sight

Egress fees, redundant ingestion runs, over-provisioned compute sitting idle, storage that compounds month over month. The bill is higher than it needs to be.

Three questions. One honest risk report.

The inputs that actually change the audit — not surface-level ones.

1

Describe your stack

Which tools are you running for ingestion, transformation, orchestration, warehousing, and BI. What you're actually using — not the ideal-state diagram.

2

Scale and team context

Data volume, team size, and how long the stack has been running. These three inputs drive most of the severity ratings — a risk that's theoretical at 10 GB is real at 10 TB.

3

Your biggest concern

What's keeping you up at night — cost, reliability, scale, vendor dependency, or team knowledge gaps. Focuses the audit on what matters to you.

4

Get your risk report

Severity-rated findings (Critical → Low), specific to your tool combination — not generic data engineering advice. Includes a summary, risks, quick wins, and longer-term recommendations.

Specific findings, not generic advice.

Every risk is tied to the tools you named — not a checklist that applies to every stack on the internet. Here's what a real report looks like.

stackaudit-report.html Sample
Summary
A mature Fivetran + Snowflake + dbt stack with a small team carrying disproportionate cost and reliability risk. Two critical issues need immediate attention before the next growth phase.
Ingestion: Fivetran Warehouse: Snowflake Transform: dbt Orchestration: Airflow BI: Looker Volume: 100 GB – 1 TB Team: Small (2–5)
Risk Areas
dbt model strategy
Critical
Full-refresh models at current volume are causing Snowflake credit spikes and a 6-hour dashboard outage last month — this pattern will worsen as data grows.
RecommendationConvert high-volume models to incremental with surrogate keys; expected 60–80% compute reduction.
Fivetran cost exposure
High
MAR-based pricing means connector costs scale with row counts, not pipeline runs. Historical resyncs on 3+ connectors are inflating your bill unpredictably.
RecommendationAudit MAR per connector; disable historical resync on stable sources; consider Airbyte for high-volume connectors.
Team knowledge concentration
Medium
Airflow DAG ownership is undocumented and concentrated in one person. A single departure would make the orchestration layer opaque to the rest of the team.
RecommendationAdd DAG-level README files and transfer ownership to a shared team account before onboarding new engineers.
Looker metric consistency
Low
Metrics defined per-dashboard rather than in the LookML semantic layer — revenue and activation numbers already diverge across two dashboards.
RecommendationDefine core business metrics as LookML measures; deprecate raw SQL-derived tiles over next quarter.
Quick wins — this week
  1. Identify the 3 largest full-refresh dbt models and flag for incremental conversion
  2. Pull Fivetran MAR report and find connectors running unnecessary historical resyncs
  3. Add a Snowflake spend alert at 80% of monthly budget
Longer term — next quarter
  1. Migrate high-volume models to incremental strategy with proper merge keys
  2. Document all Airflow DAGs and establish team-owned service accounts
  3. Consolidate metric definitions into the Looker semantic layer

For anyone responsible for a data stack's health.

You don't need to know every risk — you need to know which ones are real for your specific tools and scale. This audit handles the rest.

Good fit ✦
  • Data engineers and analytics engineers reviewing their current stack
  • Data leads and heads of data evaluating platform health before a migration
  • CTOs and VPs of Engineering auditing a team's data infrastructure
  • Teams about to scale — new hires, new data volumes, new stakeholder demands
  • Anyone whose stack "mostly works" but hasn't been formally reviewed
Not for
  • Teams without an existing modern data stack — this tool assumes you have one
  • Software engineering, DevOps, or backend infrastructure reviews
  • Data science or ML platform reviews — this is a data engineering tool
  • Compliance or legal audits requiring signed attestations

Built by a data engineer who's seen what breaks at scale.

I started as a big data test engineer — finding bugs in pipelines before they reached production. What I learned quickly was that the bugs weren't in the code. They were in the design. Flawed assumptions about the data, the wrong tool for the volume, architecture that made sense for one engineer but couldn't be handed off.

I've built big data pipelines on Spark and AWS EMR, and spent time at Amazon's AWS Billing Data Warehouse — a system collecting and maintaining 45–50 PB of data. I saw firsthand how data challenges compound at scale, what causes pipelines to fail under pressure, and how the best teams think about resilience, contracts, and maintainability from day one.

More recently I've been building and maintaining modern data stacks — Fivetran, Airflow, Snowflake, dbt, Looker. The consistent pattern: most stacks have the same three or four risks, just wearing different vendor logos. This tool makes those risks visible before they become incidents.

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Also by Supreeth: Encore → — data platform consulting. Audit & Build.