Redis is an in-memory object cache. It holds the results of WordPress database queries in memory, so repeated queries are answered instantly. This speeds up the WordPress admin and any dynamic page that cannot be fully page-cached.

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Redis is included on the Business and Pro plans. On the Starter plan the Redis page shows an upgrade prompt instead. See Changing a site's plan to move up.

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Open your site, then under Hosting select Redis. Tick Enable Redis and click Save.

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Once enabled, the Redis Status panel confirms the Redis server is running and the object cache plugin is active. There is nothing else to set up, Console connects WordPress to Redis for you.

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Redis works well alongside SmartCache. SmartCache speeds up whole pages, while Redis speeds up the database queries behind them.