is a cloud-based software model where users can access the software using a browser.

• A SaaS vendor hosts the service or the software.
• The vendor provides a license or subscription model.
• Users commonly use a browser to access it.
• The architecture provided is usually a multi-tenant approach.
• SaaS can also be called “on-demand software.”
• The host can have a shared, isolated, or even hybrid implementation.
• Shared: The data is hosted with other users (multi-tenant).
• Isolated: An isolated environment for a user or customer
• Hybrid: Combines cloud and on-premises deployment models
• Sometimes authentication and authorization integration can be a challenge.
• Ex: Netflix, Microsoft 365, Trello, Salesforce, Asana, etc.