Lead scoring is like giving a grade to each potential customer based on their level of interest and purchase probability. Data such as email interactions, website visits, and content downloads are used to assign points to each lead. This helps sales and marketing teams focus on the most valuable prospects, optimizing time and resources. Tools like Salesforce and HubSpot facilitate this process with intelligent algorithms. Good lead scoring allows for closing more sales with less effort, ensuring that the most qualified leads receive priority attention.