- A DAG is a graph with directed edges (arrows) without any cycles.
- Think of it like a series of tasks where each task can only be started once its dependencies are completed.
- DAGs are used in many areas, including scheduling tasks, modeling dependencies, and representing causal relationships.
![](https://i0.wp.com/easyexamnotes.com/storage/2023/12/What-is-Directed-Acyclic-Graphs-DAGs.png?resize=688%2C465&ssl=1)
Here, Task A has no dependencies, so it can start first. Task B and C depend on Task A, so they can only start once Task A is finished. Similarly, Task D depends on Task B, and Task E depends on Task C.