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Infrastructure

Implementation of hybrid Active Directory

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DTEK Group is a diversified energy holding that includes six business lines and the corporate university Academy DTEK.

DTEK Group is the largest private investor in Ukraine’s energy sector, with over €12 billion invested since 2005 and a team of 55,000 employees.

The Group’s companies generate electricity at wind, solar, and thermal power plants; distribute and supply electricity to end consumers; extract natural gas and coal; trade energy resources in Ukrainian and international markets; and provide energy services to both residential and commercial customers.

Production assets are consolidated into operational holdings, while the day-to-day management of each DTEK business is carried out by separate companies.

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DTEK Group has a large and well-developed geographically distributed IT infrastructure supporting a wide range of diverse services. This is driven by the presence of numerous locations, some of which do not have direct internet access, making a purely cloud-based service configuration impossible. To maintain the current level of service amid the planned growth in the number of company users (currently approximately 18,000) and to optimize resource utilization using modern technologies, a hybrid Active Directory configuration was designed and implemented. The solution is intended for efficient centralized management of user accounts.


Overall, during the implementation of the solution, the company was able to:

  • Establish centralized resource management. AD enables centralized management of local resources, simplifying administrative tasks and reducing costs.
  • Enhance security. By managing user access, AD helps protect sensitive data and resources from unauthorized access.
  • Ensure flexibility and scalability. AD can handle millions of objects within a single domain, making it suitable for organizations of any size.
  • Enable integration. Active Directory supports integration with on-premises and cloud systems and applications, providing flexibility and supporting the effective evolution of the IT infrastructure.
  • Improve policy-based administration. Group Policy helps automate software deployment and enforce consistent policies across the organization.


Centralized resource management enabled by Active Directory is critical for ensuring efficiency and security in today’s business environment. The use of these technologies not only streamlines workflows but also ensures a high level of data protection, allowing companies to stay ahead of ever-evolving IT security requirements. The integration of Active Directory into the IT infrastructure has made it possible to achieve a new level of management and security, which is key to maintaining resilience and trust in business.

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