This is the 6th edition of a book that clearly explains the structure and trends of the IT industry. I read it once and then stored it on my bookshelf. There is some minor wear and tear, but there are no markings, and it is perfectly readable. Please note that this is a layman's inspection, so there may be oversights. If you are sensitive to such things, please refrain from purchasing. ☆ Immediate purchase is welcome. ⚠️ Please understand that cancellations and returns are not accepted after purchase. - Title: The World's Easiest to Understand IT "Information" Service Industry Structure and Flow, 6th Edition - Contents: Explains basic IT knowledge, types of services, system development, trends, etc. - Author: Ishiguro - Publisher: Libro - Price: 1,800 yen - Number of pages: Approximately 200 pages Thank you for looking.