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+Odoo core provides `base_automation`, which is well suited for **simple, isolated rules**
+triggered by **internal record changes** (e.g. *on create*, *on update*, *on delete*, or *timed conditions*).
+
+When processes become more complex (multiple steps, different timings, conditional paths),
+it can be harder to understand and maintain the whole flow in `base_automation`.
+
+`automation_oca` focuses on **workflow-based automations**, where the full process is defined
+as a sequence of steps with **timings** and **dependencies**, and can also react to **external events**
+such as email interactions (opened, replied, clicked, bounced, etc).
+
+In short:
+
+- use **`base_automation`** for simple automations driven by internal record updates
+- use **`automation_oca`** for multi-step workflows with timings, dependencies, and external events