Assessment of business efficiency and enterprise investment as financial instruments in managing the economic security of the national economy and ensuring the socio–economic development of the country

The subject of the study. The article is devoted to the study of the role of business performance assessment and enterprise investment as financial instruments in managing the economic security of the national economy and ensuring the socio–economic development of Ukraine. 
Research methods. The study used a combination of scientific methods and approaches, including systemic, logical, analytical, and graphical, which ensured the conceptual unity of the study.
It is proved that in conditions of global economic instability, increased geopolitical risks, military challenges and rapid digital transformation, the use of artificial intelligence, ensuring the economic security of the national economy becomes a priority task. The economic security of the national economy is defined as a state in which the country’s economy is able to withstand internal and external threats, ensuring stable growth, efficient use of resources and protection of key sectors.
Results of work. An effective tool for the development and functioning of business structures in the current conditions is the management function of analytics, forecasting and system planning, which serves as a platform for future development and allows you to resist emerging crisis phenomena, mitigate their consequences and make forecasting and bankruptcy impossible.
Field of application of the results. The main approaches to assessing business efficiency in the context of investment and management of the economic security of the national economy are financial, operational, innovative, digital and systematic. Key indicators for assessing business efficiency in the context of economic security of the national economy are proposed and the algorithm for its implementation is visualized. 
Conclusions. The role of the state in ensuring macro–financial stability, stimulating investment, attracting international assistance, developing critical sectors and protecting business from risks is substantiated. Rebooting institutions (Bureau of Economic Security, Customs), de–shadowing of the economy, accelerating privatization and combating corruption are identified as prerequisites for improving the business climate and investment, in particular international investors. For practical implementation, the introduction of integrated monitoring systems that combine business analytics with investment and state regulatory mechanisms, as well as the development of public–private partnerships (PPP) between the state, business and international organizations is recommended. Further research will focus on developing universal assessment models for different sectors, taking into account post–war recovery, digital transformation, artificial intelligence, and environmental factors, in order to ensure comprehensive economic security for all levels of the national economy.