WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture...
Do not rely solely on estimated visitor numbers. Consider how many people may use the site at once, how complex the pages are and what visitors will do: reading an article places different demands on hosting from searching products or completing purchases. Check CPU, memory, concurrent process and database limits, along with options for increasing resources.
Before the campaign, monitor normal resource usage and discuss a controlled load test with your provider, making sure it is permitted under the service terms. Plan how to increase capacity and check how long changes may take. Caching can help public pages, but it does not replace adequate resources for dynamic operations.