Today the rapid development of information technology has a major impact on the global economy, which contributes to the development of the e-commerce sector. The benefits of using internet are attracting more and more participants who want to take advantage of the new opportunities for business promotion, to improve the quality and sustainable development of trade services. In today's competitive environment, developing and implementing a quality system in the work process becomes one of the competitive advantages of companies, as the modern consumer has become more demanding and selective. Therefore, in order to ensure effective control and organization of the work process in the company, it is necessary to develop a system that accurately describes the processes in the company and promotes the employees' full action in the accomplishment of the assigned tasks and achievement of the goals. This study examines e-commerce quality issues such as website content and design, technology infrastructure and security. The introduction of a standard ISO / IEC 9126 quality assessment model for e-commerce service analysis is also discussed. Based on the available literature, the aim of the study is to provide a theoretical insight into quality management in the context of e-commerce and to explain why quality management principles are important for the development of the e-commerce industry.

The development of telecommunications plays an essential role in the economy, as it affects the opportunities for communication between economic actors at both the national and global levels. Today mobile communication companies, which provide quality communication and information retrieval opportunities through the variety of their services, technological features and tariff plans, are important telecommunication providers. The aim of the present research is to examine the leading mobile communication service providers in Latvia by employing the theoretical findings of communication technology and telecommunications.The research used the following methods: monographic, induction and deduction, graphic, comparison, as well as competitiveness assessment based on the competitiveness index.The research described the theoretical aspects of telecommunications, examined the leading mobile communication service providers in Latvia, their most important financial performance indicators, services and tariff plans offered as well as assessed their competitiveness.Examining the mobile tariff plans and the services included therein, it was found that they were quite similar. However, an examination of each offer in more detail revealed that there were many nuances that were important to the client and that should be paid attention to.After assessing the competitiveness of the leading mobile communication providers, it was concluded that Latvijas Mobilas Telefons scored the highest number of points, Bite Latvija was in second place and Tele 2 took third place. An assessment of the key factors of competitiveness for the providers revealed that the company Latvijas Mobilais Telefons needed to improve the positions where its competitors had higher ratings: its discount system, the prices of services and the supply of services.