This case study details the automation of supplier invoice processing using PowerAutomate, Python, Selenium, and VBA. PowerAutomate handled email retrieval and storage; Python extracted data from invoices, employing OCR where necessary; Selenium automated data entry into the accounting system; and VBA generated reports. The automation significantly improved accuracy, efficiency, and provided better insights into spending. The study concludes with recommendations for implementing similar solutions, stressing a phased approach and thorough testing.