Part 1 provides the groundwork for understanding the PMBOK ยฎ Guide Seventh Edition. We will revisit how the PMBOK ยฎ has evolved over time, examine the major changes introduced in the 7th Edition (especially in comparison to the 6th Edition), and introduce the key concepts of principles, performance domains, and the value delivery system. By the end of this part, youโll have a solid grasp of why the PMBOK ยฎ changed and what that means for project managers.