This book contains select proceedings of the 12th annual conference of Deep Foundations Institute of India, DFI-India 2023, held during 05–07 October 2023. The book showcases the advancement in deep foundation technologies through articles on research works and case histories under sub-themes: 1) Deep foundation and deep excavation techniques. 2) Sustainability practices in deep foundation industry. 3) Innovative techniques and testing for foundations and geotechnical investigations, monitoring, and performance. 4) Construction and QA/QC of deep foundations including case studies. 5) Ground improvement techniques. 6) Geotechnics for marine, near-shore, and coastal construction. 7) Innovations in experimental and numerical methods in deep foundations and ground improvement. 8) Futuristic technologies in deep foundations—large diameter piles, helical piles, monopiles, tiebacks, driving devices, etc.; legal and contractual aspects of deep foundation construction projects. The articles covered in this book are of immense value to professionals and academicians for improving their work practice.