CoreAXI4Interconnect is a scalable and configurable interconnect IP that enables efficient communication between multiple AXI-based initiators and targets in FPGA systems. Based on the AMBA AXI4 protocol, it supports high-performance, high-frequency designs requiring flexible and low-latency data movement across complex system architectures. The core provides a centralized AXI4 crossbar that routes transactions between initiators and targets while supporting up to 16 initiators and 32 targets. It integrates advanced infrastructure components such as protocol converters, data width converters, register slices, and clock domain crossing logic to ensure seamless interoperability between different bus standards and configurations. CoreAXI4Interconnect supports AXI3, AXI4, AXI4-Lite, and AHB-Lite interfaces, automatically handling protocol conversion and burst transaction adaptation. It also enables advanced features such as multiple outstanding transactions, read interleaving, and configurable arbitration mechanisms to maximize throughput and efficiency. With flexible crossbar configurations (SASD or SAMD modes), configurable data widths, and optimized buffering options, the IP allows designers to balance performance and resource utilization. It is widely used as a foundational building block in FPGA-based SoCs, enabling scalable interconnect architectures for both control and data paths.