Voice Assistants come in the form of Apple's Siri (HomePod), Amazon's Alexa, Google Home or Microsoft Cortana. In the last few years they've become more integral in our lives and homes. A technical explanation and definition of a voice assistant is
"a digital assistant that uses voice recognition, language processing algorithms, and voice synthesis to listen to specific voice commands and return relevant information or perform specific functions as requested by the user."
Wordstream indicated in an article in 2019 that "In 2017, there were 33 million voice search devices in circulation, with 40% of adults using them every day. In fact, Google’s voice search tool received 35 times more search queries in 2016 compared to when it launched in 2008."
With the proliferation of voice assistants it is wise to incorporate this as a factor within your overriding SEO strategy. Some traditional SEO methods need to be reviewed and sense checked.
Arguably, when typing it is easier to miss out words. For example, SEO Agency Southampton maybe used when searching on Google by typing. However, when using a voice assistant a searcher may ask "Who is the best SEO agency in Southampton?". It's important to ensure longer tail conversation keywords are not neglected within the site content and overall SEO strategy.