Explain project spend.
Export by cost centre.

Read your BigQuery billing export, compare project costs and prepare monthly Excel pivots.

Use existing billing.

Connect the BigQuery export you already have, with dataset read and query permissions.

Find the largest increases and decreases, then drill into the services behind them.

Keep effective-dated cost-centre mappings and create monthly tenant workbooks.

A separate read-only identity lets Costex inspect resource configuration and usage for savings reviews.