This book provides an overview of the basic concepts and components of UAVs, the various sensors used, architecture of autonomous UAVs, communication tools and devices to acquire real-time data from UAVs, the software needed to analyze the UAV data, required rules and regulations to fly UAVs, various application areas (e.g. construction, oil and gas, mining, agriculture, forestry, search and rescue, surveillance, transportation, disaster, logistics), and future areas of research which is needed to handle relevant challenges.