This lecture introduces the concept of multicore processors, focusing on the shift from faster processors to multiprocessors. It covers the architecture of multicore CPUs, the principles of processor-memory interconnect, the challenges of concurrency, and the implementation of high-level atomic objects. The lecture also discusses processes, wait-freedom, and synchronization problems like reader/writer and producer/consumer. It emphasizes the importance of concurrency in modern computing and the need for efficient synchronization mechanisms.