Provides professional site monitoring systems via SaaS model. Monit24.pl Sp. z o.o. is a legacy of a IT company founded in 2006, now it is a independent instance focused on website, portals, self-care and, e-commerce web sites monitoring with unique features and based on advanced technologies and ingenious techniques. Monit24.pl provides services for such an institutions like banks, public sector, media. We introduced unique product able to verify all crucial functionalities of a complex web systems. In regular time periods the Monit24 platform checks if the website's replies are correct. It simulates user's and web browser behavior, so it visits the site in predefined scenario. For example it can perform the following actions for some e-commerce site: open the main page, use the search engine on the site to find some products, verify if any of products was found, visit product's sub page, add the product to the cart, continue shopping, go to the check out, finalize shopping. Each step of this sequence is logically related and on each step the system validates data that is being sent by the website. If anything goes wrong on any step, then the system notifies a proper person with detailed event description.