Comprehensive and Detailed Explanation From Exact Extract:
View Acceleration is a Tableau Server and Tableau Cloud feature that speeds up slow-loading views by precomputing their queries in the background.
According to Tableau’s server and cloud performance documentation:
When View Acceleration is enabled for a view, Tableau runs the queries behind that view on a background process and stores the results in memory.
When an end user later opens the view, Tableau can serve the precomputed results immediately, rather than running the potentially long-running queries at that moment.
This improves initial load time significantly for views that are slow because of heavy queries.
It does not only work with extract-based data sources (it can also help with many live connections), so option A is too limited.
It does not change the client-side rendering engine, so option C is incorrect.
It is not specific to transient functions but to any view where the query is expensive, so option D is not accurate.
Therefore, the correct description is that View Acceleration precompiles and fetches workbook data in a background process, which matches option B.
Tableau Server and Tableau Cloud help describing View Acceleration as precomputing and caching view results using background processes.
Performance tuning guidance recommending View Acceleration for views with slow query execution.