The process of developing the PMBOK Guide
The PMBOK Guide and other standards in PMI follow a development process that complies with good practices for standardization according to the American National Standards Institute (ANSI) and to some degree to the International Organization for Standardization (ISO).
The core development team of PMBOK 7 consisted of 12 members (including this author) with different backgrounds and specialties, all of whom were responsible for the content. There was a leadership team, responsible for coordinating, reflecting the expectations of PMI in the development team, etc.
There were a select group of about 70 reviewers who helped by reviewing and commenting on major deliverables throughout the work. At the end, an exposure draft was made available to the public to review. More than 600 people helped by reviewing the draft and submitting comments. The development team used those comments to improve the content, and the final version was published after this.