We have been living in a digital revolution, with the creation of new online services, the popularization of electronics, the advent of generative AI, and a growing trend of virtualization of things, allowing the creation of a digital twin version of a real object. As this revolution pushes society forward, there is a high performance demand for its infrastructure, such as telecommunication networks. There is a constant need to transmit a massive amount of data, which is increasing with the market demand. The scientific community has been working to bring new solutions to this demand. One possibility is simplifying the edge devices, adding open issues, and reducing system latency. In this context, photonic integrated circuits can play a significant role. This work concisely reviews the current development of photonics integrated circuits (PIC) for optical systems with strict requirements and the demand for massive data transfer. As the current telecommunication scenario rapidly evolves due to market demands and the creation of new requirement-sensitive services, it is crucial to understand the role of integrated photonics in telecommunication networks as discussed in this work. Also, it is presented how open issues, such as chromatic dispersion, can be handled by PIC, leveraging the overall performance of optical telecommunication systems.