In Bangladesh's unique geological and climatic context, persistent geohazards such as landslide and land subsidence, riverbank and char-island erosion, coastal and road embankment failures, seawater intrusion and soil salinization, etc., are prevalent. These geohazards not only cause financial losses due to infrastructure failure but also threaten the lives of the community and their socio-economic system. Implementing sustainable remedial measures equipped with smart monitoring, accurate prediction, and timely warnings is essential for significantlyreducing the risks associated with geohazards.

Vetiver Grass Technology (VGT) has emerged as a recognized nature-based solution to these challenges. Despite substantial research on VGT, gaps still need to be found in its design, construction processes, and contracting methods, particularly concerning soil and geo-environmental variations. In this context, the research works conducted by the author delve into the efficacy of Vetiver grass when grown in soils treated with various stabilizers under diverse conditions. It explores rooted soil's mechanical and hydraulic properties through rigorous numerical and mathematical analysis. Thorough model and pilot studies in diverse environments have adopted VGT for various infrastructure projects, such as stabilizing landslides in hilly areas, including refugee camps, road barriers, land reclamation, and protecting char lands. This methodology has been deployed across various geographical locations in numerous local and international projects, collaborating with governmental and international organizations and funding agencies. VGT has shown notable success in challenging conditions such as wave action, submerged areas, and saline environments. Its versatility was tested in various configurations, including standalone applications, combination with geo-jute, integration in hollow CC blocks, and use in floodplains and drought-prone areas. Compared to other methods like jute geo-textile, recycled plastic pin, CC blocks, synthetic geo-textile, and reinforced concrete retaining walls, VGT stands out as the most cost-effective, which has led to its inclusion in the procurement schedules of various government departments. The research findings have been disseminated through workshops, trainings, and publications in top-tier journals and have garnered coverage in local and international media. Despite these successes, challenges in spreading this technology persist, primarily due to limited knowledge, motivation, and awareness among engineers and local communities. Addressing these challenges necessitates effective knowledge sharing, skill training, community-based activities, e-marketing strategies, detailed standards and rate schedules, and efficient contracting methods. Additionally, securing funding for focused research and fostering multi-disciplinary collaboration is vital for developing this sector's comprehensive guidelines and construction methodologies.

Integrating the Internet of Things (IoT) enhances VGT for geohazard mitigation. IoT collects slope data by involving a network of connected devices like soil moisture sensors, rain sensors, inclinometers, tiltmeters, and accelerometers. These sensors serve specific functions: moisture sensors track soil saturation to warn of landslide risks, accelerometers detect minute ground movements, inclinometers monitor slope angle changes, and rain sensors link rainfall to slope movements. Powered by solar panels, this setup enables real-time monitoring and improves predictive capabilities for landslide and rockfall prevention, marking a significant advancement in VGT application.