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.