87 Copyright © 2016, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. Chapter 4 DOI: 10.4018/978-1-4666-9764-5.ch004 ABSTRACT The chapter introduces the defnition of usability, usability assessment techniques to be adopted during the whole application life cycle for promoting usability. Then, the chapter includes design features for evaluating e-commerce websites such as navigation, content, design, ease of use and structure features and designing usable e-commerce websites. Then the chapter discussed the user testing method followed by a case study which comprises data collection by users’ preferences, data analysis and the results. The latter in the chapter, we briefy describe the efectiveness of usability evaluation methods. Lastly, we describe the usability problem areas, strength and weaknesses on diferent features and sub-features of e-commerce websites followed by a conclusion. INTRODUCTION Due to highly suited capabilities, the World Wide Web continues to generate substantial frustration among users. The difficulty was downloading content that is text based formats, audio, video and 3D graphics. Poorly designed websites can lead to lost productivity and revenue. Web site quality is dependent on the quality of the software. In the early years, the quality of software provided effective support to develop the websites’ performance. Nevertheless the quality assurance process became the challenges for the new discipline of website application. There were a number of experts or organizations who researched on different proposals to improve website quality, including quality frameworks, criteria, evaluation methodologies, approaches and metrics. In fact, since the website quality process became a particularly valuable topic which is ongoing and commercially researched, especially in website quality metrics. A set of metrics has been proposed for quantifying website quality Quality Assurance Aspects of Web Design Sandeep Kumar Panda KIIT University, India Santosh Kumar Swain KIIT University, India