By typing the text search, the user mostly needs to think before typing. The most relevant keyword term or phrase in order to get the best results. However, in case of voice search, the user will tend to ask the query in a longer form, using natural language. This is a help to Optimize Your Website Content.
Furthermore, Voice Search SEO can have the power to deliver information matching the specific interests of the user. For instance, Google Now provides information about stock prices, sports scores, weather conditions, local traffic status even without the user having to ask for it.
As the usage of voice search grows and the technology develops, online content will have to be increasingly targeted towards people and not search engines. To check for a local business listing on Siri or Google.