A321
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Troubleshooting
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Air Traffic Control Provided Assistance; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Returned To Gate; General Maintenance Action; General Flight Cancelled / Delayed
Aircraft
Previous flight was an RON (Routine Overnight).  Dark aircraft upon crew arrival at the gate.  Started the APU and used it for air and power at gate. After both engines were started and APU bleed was deselected; we began taxi. Within approximately one minute; both the FO (First Officer) and I began smelling a strong 'dirty socks' smell in the cockpit. We deselected both packs and called the inflight to determine if they had smelled it as well. It was confirmed that they had the odor in the cabin as well. We coordinated a gate return for maintenance action.  Company report form completed. This report is being submitted solely because it is recommended: there was no cockpit crew error or deviation.
Air Carrier Captain reported a fume event during taxi. Crew coordinated a gate return for maintenance action.