The difficulty level of PMP Certification Exam has certainly increased with the introduction new Exam Content Outline (ECO). In addition to this new ECO, PMI also increased the syllabus of the exam. Before Jan/02/2021, the go-to reference book was PMBOK Guide 6th Edition. Now, the number of reference books has gone up to 10 (Refer Question # 12). The candidates now have to study more, refer a greater number of books and understand the three new domains of the exam. The exam has certainly become difficult; however, you will be able to pass the PMP exam with flying colours with right resources, study guides, study routine, mock tests and better ATP.