Networks on Chips (NoC) represent a new paradigm in System-on-Chip (SoC) design, aiming to address the challenges of functionally correct and reliable operation of interacting components. As SoC technology advances, the need for efficient communication and energy management becomes critical. The paper discusses the challenges of on-chip communication, including wiring delays, synchronization, and energy consumption, and proposes the use of layered, reconfigurable micronetworks to achieve efficient communication. The paper highlights that as chip sizes increase and clock frequencies rise, the delay on global wires becomes a significant issue. This delay is influenced by the finite propagation speed of electromagnetic waves, leading to longer signal traversal times. Future SoC designs will require higher energy consumption for global communication, making energy efficiency a key concern. Additionally, the reliability of on-chip communication is challenged by noise, crosstalk, and electromagnetic interference, leading to data errors or upsets. To address these challenges, the paper proposes a micronetwork stack paradigm, inspired by network design, which abstracts the electrical, logic, and functional properties of the interconnection scheme. This approach allows for a modular, component-based design of both hardware and software, enabling the creation of complex SoCs with deterministic and stochastic models. The paper also discusses different interconnection architectures, including shared-medium, direct, indirect, and hybrid networks, each with its own advantages and limitations. The SPIN micronetwork is presented as an example of a deterministic routing approach, which minimizes message latency and storage requirements. The paper further explores the software layers of SoC design, including system and application software. System software must provide quality of service within the physical constraints of the application, while application software must be portable and leverage the distributed nature of the underlying platform. Overall, the paper emphasizes the importance of a layered-micronetwork design methodology in mastering the complexity of SoC designs in the future. This approach combines deterministic and stochastic models, modular design, and reconfigurable networks to achieve efficient, reliable, and energy-efficient SoC systems.Networks on Chips (NoC) represent a new paradigm in System-on-Chip (SoC) design, aiming to address the challenges of functionally correct and reliable operation of interacting components. As SoC technology advances, the need for efficient communication and energy management becomes critical. The paper discusses the challenges of on-chip communication, including wiring delays, synchronization, and energy consumption, and proposes the use of layered, reconfigurable micronetworks to achieve efficient communication. The paper highlights that as chip sizes increase and clock frequencies rise, the delay on global wires becomes a significant issue. This delay is influenced by the finite propagation speed of electromagnetic waves, leading to longer signal traversal times. Future SoC designs will require higher energy consumption for global communication, making energy efficiency a key concern. Additionally, the reliability of on-chip communication is challenged by noise, crosstalk, and electromagnetic interference, leading to data errors or upsets. To address these challenges, the paper proposes a micronetwork stack paradigm, inspired by network design, which abstracts the electrical, logic, and functional properties of the interconnection scheme. This approach allows for a modular, component-based design of both hardware and software, enabling the creation of complex SoCs with deterministic and stochastic models. The paper also discusses different interconnection architectures, including shared-medium, direct, indirect, and hybrid networks, each with its own advantages and limitations. The SPIN micronetwork is presented as an example of a deterministic routing approach, which minimizes message latency and storage requirements. The paper further explores the software layers of SoC design, including system and application software. System software must provide quality of service within the physical constraints of the application, while application software must be portable and leverage the distributed nature of the underlying platform. Overall, the paper emphasizes the importance of a layered-micronetwork design methodology in mastering the complexity of SoC designs in the future. This approach combines deterministic and stochastic models, modular design, and reconfigurable networks to achieve efficient, reliable, and energy-efficient SoC systems.