Despite many studies focusing on writing materials, few developed e-book writing materials for university students. This study aims to 1) analyze the students' and lecturers' needs related to the development of the Introduction to Essay Writing Course's textbook based on HOTS-Tech (Higher Order Thinking Skill-Technology) integrated with CM-PBL (Case Method-Project Based Learning) and 2) to develop an Introduction to Essay Writing Course's textbook based on HOTS-Tech integrated with CM-PBL. This study employs R &D with the ADDIE model (Analyze, Design, Develop, Implement, Evaluate). Participants in the current study are 35 university students and four lecturers. We employed instruments such as questionnaires, interviews, and observations. Data collection traces the ADDIE model, while the data analysis employs non-parametric statistics with a descriptive quantitative model. The result shows that the book adheres contents of the book, material presentation, presentation order, the balance of the chapter, language use, and layout. The activities should cover higher-order thinking skills (HOTs) under main categories; analyzing, evaluating, and creating. The current study implies that EFL university teachers embed technology and HOTs in the Essay Writing e-book to promote the techno-skill of the current generation.