Here are some handy references helping to make the business case for software testing:
- https://www.hyland.com/en/complete-view/articles/standard/seventy-percent-not-successful
- https://www.gartner.com/en/newsroom/press-releases/2020-01-15-gartner-says-global-it-spending-to-reach-3point9-trillion-in-2020
- https://www.mckinsey.com/business-functions/mckinsey-digital/our-insights/delivering-large-scale-it-projects-on-time-on-budget-and-on-value#