The two-volume set CCIS 2179 + 2180 constitutes the refereed proceedings of the 31st European Conference on Systems, Software and Services Process Improvement, EuroSPI 2024, held in Munich, Germany, during September 2024.  The 55 papers included in these proceedings were carefully reviewed and selected from 100 submissions. They were organized in topical sections as follows: Part I: SPI and Emerging and Multidisciplinary Approaches to Software Engineering; SPI and Functional Safety and Cybersecurity; SPI and Standards and Safety and Security Norms;  Part II: Sustainability and Life Cycle Challenges; SPI and Recent Innovations; Digitalisation of Industry, Infrastructure and E-Mobility; SPI and Agile; SPI and Good/Bad SPI Practices in Improvement.