OPC (OLE for Process Control) is a set of industry standards designed to facilitate the interoperability of control systems in industrial automation. Created by the OPC Foundation, the standards enable seamless communication between various automation hardware and software components, such as PLCs (Programmable Logic Controllers), SCADA systems (Supervisory Control and Data Acquisition), and HMI (Human-Machine Interface) software. The goal of OPC is to offer a common interface for these components, irrespective of the manufacturer or the underlying technology. Over time, the scope of OPC has expanded beyond just OLE and Microsoft Windows, leading to the development of OPC UA (Unified Architecture), which supports cross-platform operability, enhanced security, and more complex data structures. With OPC standards, the complexity and costs of integrating disparate industrial systems can be significantly reduced, allowing for greater flexibility and efficiency in manufacturing and process control.