Data Analytics / Science tools at Bloomberg

What kind of notebook environment do they use? (Jupyter, Hue, Databricks, etc.). Also what analytics tool do they use for dashboards? (Tableau, Looker, etc.)? Does the company’s data pipeline still on legacy technology? I want to know the general tech stack for data engineering, data science, data analytics. I know they are mostly in-house built tools but how are they compared to whats on the market currently?