Building and maintaining your own Selenium Grid is complex and a high level of resources. The open source Selenium Grid provides basic functionality for running cross browser tests. However it is missing the scalability and enterprise level functionality which many organisations require today. With every new browser, driver and Selenium release, there is significant effort involved to ensure that the new browser versions are running properly in the Selenium Grid.
Selenium Box is a maintenance free solution, as the browser, driver and Selenium updates are managed by us. As a client, you can fully focus on building tests rather than test infrastructure. Selenium Box also provides enterprise level features like live view, video recording, access control via LDAP and more.