The technology commonly used in developing chatbots for customer service is Natural Language Processing (NLP). NLP enables chatbots to understand, interpret, and respond to human language in a conversational manner. By analyzing user input, chatbots can provide relevant information, answer queries, and assist with problem-solving in real-time. Various platforms and frameworks, including Dialogflow and Microsoft Bot Framework, leverage NLP technologies to enhance conversational AI capabilities. This technology improves user experience and streamlines customer support processes, allowing for increased efficiency in handling inquiries.