The Agile Manifesto has shaped software development for over 21 years. However, empirical research into its real-world effectiveness remains scarce. Recent findings highlight a pressing concern: 81% of business decision-makers in the UK and 89% in the USA worry about on-time software project delivery within their organisations.

A new study, conducted for the book "Impact Engineering," reveals that 65% of software projects using Agile principles fail to meet deadlines, budgets, and...