Professional Services Automation
Also known as: PSA, PSA Software
Definition
Professional Services Automation, or PSA, helps services firms manage projects, staffing, utilization, time capture, billing, revenue recognition, and delivery economics. In tech services firms, PSA data quality often determines whether margin and utilization metrics can be trusted.
PSA systems do not fix delivery discipline by themselves. They expose whether scopes, staffing, time entry, billing, and margin ownership are controlled.
In services diligence, PSA quality is often the difference between a credible margin story and a spreadsheet guess.
Related terms
- Backlog — Contracted but not yet delivered work or revenue, often used to assess delivery capacity and revenue visibility.
- Gross Margin — Revenue minus direct delivery costs, expressed as dollars or percentage. Gross margin shows how much revenue remains before operating expenses.
- Revenue Leakage — Revenue that should have been earned, billed, collected, renewed, or expanded but is lost through process gaps.
Where this gets applied
- Unit Economics — CAC payback, NRR, gross margin by segment, cohort analysis, paid-on-bookings vs. paid-on-cash.
- Financial Infrastructure — ARR waterfalls, deferred-revenue rules, board-pack standardization, FP&A architecture.
- Process Documentation — Sales process, customer success playbooks, technical runbooks, financial close calendars, hiring rubrics.