The document discusses trends in featured snippets on Google search over time. It analyzes data on over 1 million keyword searches and finds that the percentage of search engine results pages containing featured snippets has increased from January to July, both for desktop and mobile searches. Featured snippets most commonly take the form of tables. The type of content and format that appears in featured snippets varies depending on the keyword and query type. The document provides tips for content creators to optimize their content for different queries based on the types of snippets that currently appear.