PSA stands for Professional Services Automation. It refers to software that helps professional services organizations manage project delivery, time tracking, resource planning, invoicing and financial reporting in a single integrated platform.

ERP (Enterprise Resource Planning) software covers the full spectrum of business operations including supply chain, manufacturing, HR and accounting.

PSA software is specifically designed for service-based organizations that deliver project-based work. PSA focuses on the project lifecycle from sales opportunity to final invoice, whereas ERP handles broader business functions.

The line between the two is increasingly blurred as modern PSA platforms add financial reporting and ERP integration capabilities.

 CRM software manages customer relationships, sales pipelines, and marketing activity. PSA software manages what happens after the deal is won, such as project delivery, resource allocation, time tracking, and invoicing. The two systems work best together: CRM handles the sales process, PSA handles the delivery process. PSOhub integrates natively with HubSpot CRM, so both systems share data automatically. 

PSA software is used by professional services organizations across multiple industries: IT firms and tech consultancies, marketing and advertising agencies, management consultancies, architecture and engineering firms, financial services and accounting firms, and any other organization that delivers project-based work billed by the hour or milestone. 

 PSA software is typically priced per user per month, ranging from approximately €15 to €80 per user depending on the platform and feature set. Enterprise platforms with full ERP integration and advanced analytics tend to be at the higher end. PSOhub offers transparent per-user pricing. See the full breakdown on our pricing page. 

 The typical trigger points are: the team is spending more than a few hours per week reconciling data between tools, invoicing errors are causing client complaints or delayed payments, margins are only visible at month-end rather than in real time, resource planning is done in spreadsheets or in someone's head, or the organization is growing and processes are not scaling with it. Most organizations that implement PSA software describe the decision as "we should have done this sooner." 

 PSOhub is the leading PSA software built specifically for HubSpot users. It offers a native two-way integration with HubSpot, meaning deals automatically become projects and hours sync back to contacts and deals. Unlike generic PSA platforms connected via Zapier, PSOhub is purpose-built for the HubSpot ecosystem.