What are the limitations of Looker Studio compared with other BI tools?

No native row-level security — it has to be built with the viewer email parameter or enforced upstream.

Fixed canvas — reports scale but do not reflow, so mobile needs a separately built page.

Blend limits — five sources, dimension-only join keys, and a performance cost.

Query-per-component — dense pages are slow by construction.

In exchange it is free, browser-based, shares like a Google Doc and connects to the Google stack with no setup. For marketing and web reporting that trade is usually worth it; for governed enterprise reporting it often is not.