Reliability is largely for web-based systems are defined by quality and efficiency, i.e., the property of system to save time within the established values of all parameters characterizing the ability of a system to perform required functions within specified modes and conditions of operation. This research article is an analysis software for building distributed and reliable web systems, and is a study of criteria for comparing the software. In the process of selecting software professionals need to analyze it in accordance with defined criteria to evaluate the possibility of using this software package for the solution of technical problems and ensure the needs of the users. Experts in the field of distributed web systems there are several software systems to solve the problem of building such systems: 1C-Bitrix 24, 365, Microsoft Dynamics, Microsoft SharePoint. These software systems allow for the implementation of distributed systems. To simplify the process of selecting a software product needs to have criteria by which to evaluate a product. In this article the review of software products, identifying evaluation criteria, and comparison according to the criteria of the selected products.

Keywords: the web system, distributed information system, system reliability, scalable, cluster technology, and managed system

This article determines the approach to the implementation of the role model in the implementation of 1C-Bitrix, shows the key approaches to implementation and their impact on productivity, allowing to determine the degree of influence of the role model and choose the most appropriate approach regarding the implementation of 1C-Bitrix. The urgency of research of influence of role model on productivity is grounded. The key factors of the construction of the role model affecting speed and productivity are considered. The criteria for measuring the performance of the role model are presented. The results of measurements of the influence of the role model on productivity in accordance with certain criteria are described. The result of the measurements is the analysis of the influence of the role model and the factors of its construction on the system performance on 1C-Bitrix.

Keywords: web systems, 1C-Bitrix, system performance, role model, distributed web systems, 1C-Bitrix system, web performance, role model impact, role model performance, role model implementation