Voice assistants like Siri, Alexa, and Google Assistant are now key gateways to information. Millions of users ask them daily for local services, product info, and quick answers — often skipping traditional search. If your business isn’t showing up in voice results, you’re missing out on traffic, trust, and potential sales. Optimizing for voice means ensuring your data is structured, accurate, and visible across the platforms these assistants pull from.
The Big 5 Voice Assistants (as of 2025)
- Siri (Apple)
- Uses Apple Maps, Wolfram Alpha, and Bing.
- Also pulls limited info from Safari-sourced knowledge graphs and structured data.
- Has no public submission form for websites.
- Alexa (Amazon)
- Pulls data from Yelp, Wikipedia, Bing, and other verified sources.
- For businesses, Yelp is especially critical.
- Google Assistant
- Fully integrated with Google Search, Google My Business, Google Maps, and Search Console.
- Most comprehensive visibility — if you’re visible in Google, you’re visible here.
- Cortana (Microsoft) (being phased out as of late 2023)
- Used to rely on Bing, but is now integrated into Copilot in Windows.
- If you’re indexed by Bing, you’re indirectly covered.
- Samsung Bixby
- Uses Samsung’s own engine and third-party sources including Bing and Wolfram Alpha.
- Visibility improves with structured data and Bing indexing.
Other Assistants
- DuckDuckGo voice (rare, privacy-based, uses DDG results)
- Mycroft AI (open source, not mainstream)
- Meta’s AI voice interfaces (still evolving, pull from Facebook/Instagram, Wikipedia, and Bing in some cases)
Resources
These are indirect sources many assistants pull data from:
- Yext – Used to manage voice listings across platforms (including Alexa, Siri, Cortana).
- Apple Business Connect – Apple’s platform for local business listings.
- Dun & Bradstreet – Business verification source Alexa uses.
- Google Business Profile – Essential for appearing in Google Assistant results.
- Bing Places for Business – Microsoft’s equivalent to Google Business.
🧩 Bottom line for voice visibility
To be visible across the board:
- Be indexed by Google & Bing
- Have strong schema markup
- Ensure local business info (if relevant) is on Yelp, Apple Maps, and Google Business Profile
- Contribute or be mentioned in trusted sources like Wikipedia, news, or large knowledge bases