With a traditional on-premises architecture, businesses install software on their own computers and servers and in their own data centers. SaaS allows businesses to move to a model where software is hosted centrally by a cloud provider. By using SaaS, companies can add new capabilities and applications quickly without a major up-front investment in infrastructure and IT staff to set up and deploy the apps and supporting hardware. Migrating to a SaaS business model also eliminates the need to purchase bulk software licenses, letting organizations pay for services via a monthly subscription fee and thus reducing the up-front cost of a deployment. SaaS spares companies from the dreaded software upgrade cycle, where they have to decide whether to do a costly and complicated upgrade to get the latest version’s new features. Instead, cloud providers deliver the software’s new capabilities and latest security updates online at regular intervals.