The document summarizes the history and development of English for Specific Purposes (ESP). It began in the 1960s focusing on teaching technical vocabulary, then expanded to include learning English through subject content. By the 1980s, ESP adopted a needs-based philosophy. It developed to include approaches like Content and Language Integrated Learning (CLIL), Content-Based Instruction (CBI), and Task-Based Language Teaching (TBLT). ESP progressed through five phases: register analysis, rhetorical and discourse analysis, target situation analysis, analysis of study skills and strategies, and analysis of learning needs. The focus shifted from linguistic features to understanding discourse, learner needs and skills.