This entry explores the integration of technology in second language (L2) writing instruction, focusing on the advancements brought by computer-assisted language learning (CALL). It examines key areas such as web 2.0 technologies, corpus-based tools, automated writing evaluation (AWE), keystroke logging, and artificial intelligence (AI). The discussion highlights how these technologies have reshaped L2 writing pedagogy by facilitating collaborative learning, supporting data-driven language acquisition, providing immediate and detailed feedback, and offering insights into learner’s writing processes. The entry also considers the pedagogical implications of these tools, particularly the evolving role of AI, and proposes directions for future research. Emphasis is placed on the need for effective integration of these technologies into L2 writing practices while ensuring ethical use and addressing potential challenges such as overreliance on AI and academic integrity.