Evaluating ThoughtSpot vs Power BI for manufacturing analytics – semantic layer concerns?

We’re a mid-sized manufacturer running Power BI today for sales and production analytics. It works, but we’re hitting the same wall everyone hits: business teams file requests, we build reports, repeat. Our ops director wants to ask ad-hoc questions about sales by product line, region, and time period without waiting days for us to spin up a new dashboard. We’ve been looking at ThoughtSpot because the search interface seems promising, but I’m trying to understand what the real migration lift looks like and whether the semantic layer investment is worth it.

We’ve got data coming from our ERP, a custom CRM, warehouse management, and logistics systems. Right now that all flows into a SQL warehouse and Power BI sits on top. If we move to ThoughtSpot, it sounds like we’d keep the warehouse but basically rebuild our business logic in their semantic model. My concern is whether that’s just recreating the same work in a different tool, or if there’s actually a structural advantage that makes self-service queries more reliable.

Has anyone done a similar migration from Power BI to a search-driven platform in manufacturing or distribution? What was the real timeline, and did your business users actually adopt the new model or just ask for dashboards that look like the old ones?

Don’t underestimate the governance setup. You’ll need row-level security if different regions or business units shouldn’t see each other’s data. In Power BI that’s often hacked together per report. In a semantic-layer tool it’s defined once and enforced everywhere, but you have to design it properly upfront. Budget time for access control, metric definitions, and testing with real users before you roll it out broadly.

The structural advantage is that the semantic layer becomes a governed contract between your data team and business users. When someone searches for ‘average order value last quarter,’ the system knows what that means because you defined it once. In Power BI that logic lives in individual report files and can drift over time. For self-service to work at scale you need that single source of truth. Also consider how the platform handles complex queries – if your users need to join more than four or five tables, LLMs without semantic context fail most of the time. With a well-designed semantic layer that success rate goes way up.