Mutual synchronization without a reference oscillator has shown to scale advantageously with system size while being robust to noise. However, the complexity of its implementation has so far hindered its way into technical application. We show that the issue can be addressed using concepts from delay dynamical systems theory. These allow to predict the properties of self-organized synchronization, necessary to guide the architecture design of networks that implement the mutual synchronization concept. We confirm the theoretical predictions with numerical simulations.