Enterprise application software (EAS)
Enterprise application software (EAS) is a category of software applications that serves the needs of organizations rather than individual end users. Where consumer software helps a person accomplish a personal task, EAS supports the operational, administrative, and strategic processes of a business, government body, or other institution. It is sold or licensed to the organization as a whole, and its value is measured in organizational outcomes rather than individual productivity.
EAS spans the broad range of activities that keep an organization running: accounting, sales, customer relationship management (CRM), information management, enterprise resource planning (ERP), human resources, supply chain management, and billing. Each of these is itself a software category, and EAS is the umbrella term that groups them together.
Several traits distinguish EAS from other software categories. It is multi-user by design, with many employees – and sometimes partners or customers – working against shared data. It encodes business processes, formalizing how work moves through an organization. It tends to be long-lived: a major EAS deployment may run for a decade or more, accumulating customizations and integrations that make replacement costly. And it is integration-heavy, exchanging data with other EAS modules, partner systems, and increasingly with external software-as-a-service (SaaS) products.
These traits shape how EAS is built and delivered. The classic model was a single application deployed on internal infrastructure. Modern EAS is increasingly delivered as software-as-a-service, hosted by a provider and consumed on subscription, and built as distributed software along service-oriented or microservices lines. Because EAS models the business that owns it, its design benefits from domain-driven design, and a portfolio of EAS is typically governed under an organization’s enterprise architecture.