MyDataWork POV — Cross-account streaming pipelines sound efficient, but the complexity and security risks are significant. Managing intricate IAM setups and resource policies across multiple accounts could introduce vulnerabilities if not meticulously configured. The promise of security isolation is only as strong as the weakest link in these configurations, leaving enterprises potentially exposed to cross-account data breaches. This intricate setup demands expertise and constant vigilance, otherwise, it risks becoming a Pandora's box of security oversights.