MWAA Serverless added PythonOperator on 18 August 2026: 250 MB cap, 60-minute ceiling, no internet
MWAA Serverless can finally run your own Python and shell code, but the 250 MB package cap, 60-minute task timeout, fixed 1 vCPU worker and no-internet default decide whether your DAGs can actually move.
Manu Shukla