The COVID-19 pandemic, in the current conditions of globalization challenges, turned out to be one of the general reasons for a significant decrease in the level of economic security of economic systems, including at the level of companies. This updates the issue of guaranteeing the economic security of companies. The study aims to develop the conceptual and methodological foundations of the innovative and investment provision of the economic security of companies in the conditions of the challenges of COVID-19. The methodological principles of innovative and informative provision of the economic security of companies are based on a systemic approach, which allows considering the company as an open system in which economic security is one of the determining subsystems. It has been shown that the economic security of the company must ensure the achievement of the socio-economic goals set for the company in the conditions of the challenges of the COVID-19 pandemic, protecting the company from adverse factors and the negative impact of internal and external changes. It is emphasized that innovation is a determining factor of the economic development of the company, and therefore of economic security. The staggering of systematic steps to make management decisions is suggested to ensure the economic security of the company in the conditions of the challenges of COVID-19.

Abstract. Introduction. Enterprises of Ukraine today are at a new stage of development, which is determined both by pandemic events and changes of a political, financial and global nature, which significantly complicates the management decisionmaking. It is clear that making a management decision is an important stage in the company's activity. Usually, a decision is made as one of many alternatives that are mutually exclusive. It is believed that the decision that allows to obtain the maximum profit is rational. However, today, this is not quite the case. The effective functioning of the economic system as a whole and its individual subjects is determined by a certain level of uncertainty. It is impossible to thoroughly study its behavior without considering this level. Purpose. The purpose of the article is to study the concepts of uncertainty, clarify the levels of uncertainty and determine the features of management decision-making at certain stages of uncertainty in modern dynamic conditions. Results. Management decision-making in conditions of uncertainty is a process that results in the selection of an alternative based on the complex interaction of analysis, forecasting, optimization, economic justification, etc., which occurs in conditions of complete or partial lack of information. The article updates issues related to the functioning of enterprises in conditions of risk and uncertainty. A brief analysis of the crisis situation in which our country and the world found itself was conducted, it was compared with other similar situations, and the main consequences of this situation were outlined. Questions are raised regarding the problems of identification and timely assessment of the level of uncertainty at which the company found itself, since its correct definition will allow effective decisions to be made for further development. The concept of uncertainty is studied, the reasons for its occurrence are analyzed. The main levels of uncertainty and their signs, which determine the peculiarities of decision-making at its individual stages in modern dynamic conditions, are outlined and clarified. An analysis of the features of management decision-making in crisis conditions was carried out. Directions of company behavior and decision-making at different levels of uncertainty are proposed. Conclusions. Underestimating the uncertainty factor leads to choosing a strategy that will not allow the company to protect itself from challenges and threats. After conducting the analysis, we note the dependence of the risk degree on the level of uncertainty. To help in choosing an alternative, it is advisable to use a modern mathematical apparatus. The effectiveness of management decision-making depends on the correct definition of the level and type of uncertainty.

В статті проаналізовано основні теоретичні аспекти застосування інноваційних бізнес моделей в Україні. Визначено основні характеристики які повинна мати бізнес модель, які актуальні для багатьох великих, середніх та малих компаній на сьогоднішній день. Авторами відображено основні перспективні напрямки інноваційних бізнес моделей в діяльність провідних підприємств. В процесі дослідження проаналізовано загальні положення про функціональність бізнес моделей та який вплив мають на бізнес моделі в компаніях. Наведені приклади різноманітних діючих, основних класичних бізнес моделей, які використовуються в багатьох організаціях світу. Також більш детально розглянуто одну з інноваційних бізнес моделей Freemium, як та де її застосовують в бізнесі. Визначено, що дана бізнес модель має безліч переваг, одна з яких дозволяє залучати нових клієнтів без значних витрат. В результаті дослідження встановлено, що в сучасну цифрову епоху, коли граничні витрати на багато продуктів падають, підприємства все частіше звертаються до моделі freemium.