The layout.xml file in Magento 2 plays a crucial role in defining the structure and appearance of web pages. It allows developers to configure different blocks and their properties. Sometimes, there is a requirement to add a block's class name dynamically to the layout.xml file, which can be achieved through a few steps. Utilizing dynamic content is an effective strategy to enhance the shopping experience in a Magento 2 store. It not only attracts visitors but also improves conversion rates. For example, you can dynamically showcase offers based on customer type, location, and other factors. One of the ways to accomplish this is by following the programmatic approach described below, which enables the dynamic addition of a block's class name to the layout.xml file in Magento 2.