Description: Essence refers to the intrinsic nature or indispensable quality of something, especially something abstract, that determines its character. In the context of technology, essence can encompass fundamental concepts that define the functionality and purpose of various tools and methodologies. For example, in data analysis, essence lies in the ability to extract valuable information from large volumes of data, while in data engineering, it focuses on creating infrastructures that facilitate this process. In behavior-driven development, essence manifests in aligning software development with end-user expectations. Each of these fields has its own essence, which determines not only its operation but also its evolution and relevance in the current technological landscape. Understanding the essence of each technology enables professionals to make informed and strategic decisions, thereby optimizing resource use and improving the quality of products and services provided.