An IEEE family of standards called Time-Sensitive Networking (TSN) builds upon Ethernet to facilitate determinism over communications with guaranteed low latency, low jitter, and high dependability. Providing synchronized, deterministic network operation on prevalent Ethernet equipment, TSN finds itself at the center of essential enabler support for emerging applications such as industrial automation, self-driving vehicles, and smart grid, all which necessitate deterministic, real-time sharing of information. Time-sensitive scheduling, traffic priority, redundancy, and perfect time synchronization are only a few of the most important aspects of TSN discussed in depth in this paper, which also follows the development of the technology from ordinary Ethernet and identifies the necessity for time-sensitive communication. Besides, we examine the challenges of deploying TSN, summarize real-world applications across various industries, and discuss emerging trends such as integrating TSN with wireless networks and edge computing. As part of ensuring TSN has the ability to meet the demands of future-time-critical systems, we identified open research avenues and directions as part of our research.