Thank you for your feedback. We’re considering this for a future release of Azure Search.
Azure Search Product TeamDhiwakar Kusuma commented
We were evaluating Azure search for our Enterprise needs; and it was surprising that the spell checking / typo handling ( a feature that we take for granted - thanks to internet search engines) is not build in.
Suggestion: While you are working towards implementing this procedure; can you update the documentation with your recommendation on how to handle the scenario in its current state.
Thank you for your feedback. We could support search across indexes in the same search service. Across different search services would be much harder. We’re considering this for a future release of Azure Search.
Azure Search Product Team