SaaS (Software as a Service)

SaaS (Software as a Service) is a software delivery model in which applications are hosted in the cloud by the vendor and accessed by customers over the internet, typically through a subscription priced per user or per usage tier. The customer does not install, host, or maintain the software; the vendor handles infrastructure, security, updates, and backups, and all customers run on the same continuously updated version. SaaS has become the default model for business software, including HR and learning technology — most modern LMS, HRIS, and ATS platforms are SaaS products. The practical advantages are fast deployment (weeks instead of months), predictable operating costs instead of large upfront licenses, automatic access to new features, and scalability as headcount grows. The trade-offs deserve equal attention: recurring subscription costs accumulate over years, customization is limited compared to self-hosted software, data resides with the vendor (making data protection terms, GDPR compliance, and hosting location important contract points), and switching providers requires a data migration plan. When evaluating SaaS learning platforms, total cost of ownership, data export options, uptime guarantees (SLA), and security certifications such as ISO 27001 or SOC 2 are the key diligence items.