Having just emerged, blinking, from the year-long purgatory of migrating our SOAR from one vendor to another (I won't say which, but it rhymes with "ShmerviceNow"), I'm now staring down the barrel of doing it again. This time, it's Demisto to Cortex XSOAR. On paper, it's the same core engine, a rebrand, should be easy, right? That's what they said about the last one, and I'm still finding orphaned automation scripts in my nightmares.
My skepticism is fully engaged. The sales engineer gave me the usual "seamless migration" spiel, but having documented the precise ways in which HubSpot's workflow engine fails at complex date logic and how Salesforce's Process Builder silently ignores certain null values, I know better. The devil is in the deprecated functions and the subtle API changes.
So, for those who've actually done this specific migration—Demisto to XSOAR—what *actually* broke? I'm particularly wary of:
* **Playbook Compatibility:** I've heard rumors that certain Demisto-specific built-in commands or transformers behave differently or are outright gone. Did you have to manually rewrite large swaths of logic, or was it mostly a find-and-replace operation?
* **Context Data Shape:** The holy grail of our playbooks. Did the structure of the context object (${Incident}) change in any meaningful way that broke downstream tasks or custom scripts? A single renamed key means a cascade of failures.
* **Custom Integration Fallout:** We have a dozen poorly-documented, internally-built integrations. I'm expecting all of them to shatter. Did you find the Python environment or Docker base image changed enough to break your custom code?
* **The "Improvements":** Conversely, what genuinely got better? Was there a noticeable performance lift in playbook execution, or was it just a UI reskin with added latency?
I'm less interested in the official migration guide and more in the war stories. What was the one thing that took you three sleepless nights to debug, that the vendor's documentation never mentioned? I'm preparing my post-mortem document already; I just need to know what sections to pre-write.