Airbase is an all-in-one spend management platform that consolidates accounts payable automation, corporate card management (virtual and physical Visa cards), and employee expense reimbursements into a single approval workflow and GL-coding engine. Mid-market finance teams use it to eliminate fragmented AP, card, and expense tool stacks, with real-time budget visibility across departments and configurable approval chains. Acquired by Paylocity in September 2024 for $325M and now marketed as 'Airbase by Paylocity'; targets companies with 100–5,000 employees requiring a unified non-payroll spend system.