This book fills the need of upcoming changes in geo-informatics and basic level up-gradation and comprehensive text on digital technology under varying circumstances for the students at undergraduate and post-graduate studies.This will be of immense use in dealing basic principles envisage knowledge and applied aspects of digital mapping of natural resources for students, scientists, extension workers as well as teachers engaged in delivering lectures in class rooms. Remote sensing includes GIS to process data as per need have been explained with maximum accuracy kept in mind during final shape of the book.This book contains ten chapters covering GIS, GPS, Cartography, digital terrain analysis, aerial photography, topographical map, drone technology, image processing, remote sensing remote sensing imagery along with suitable example executed in fields using these technologies for agriculture, soil conservation, geo-informatics, mappers and field workers.