What is SaaS?
Software as a Service
SaaS (Software as a Service) is a model of using the application by subscription through the browser without installing it on your computer.
Definition and Word Origin
In the past, you had to buy a CD and install it to use a program. In the SaaS model, you open your browser and connect to the software over the internet. The company providing the software handles maintenance, backups, and updates. You typically pay via a monthly or annual subscription. Google Workspace, Salesforce, and Netflix are well-known examples of this model.
How to Know and Use in Daily Life?
Office: Email, calendar, and document editing.
Entertainment: Streaming and music platforms.
Work: Customer tracking (CRM), accounting, human resources.
Education: Homework and exam platforms.
Technical Depth and Architecture
Here's what works behind the scenes of SaaS products:
Multi-tenant structure (Multi-tenant): A single installation serves thousands of customers. Data is kept logically separate.
Subscription and authorization: Unlocked features and user quotas according to your plan.
Seamless update: The new version is rolled out to everyone at the same time. You won't have to worry about keeping track of the version.
Scaling: During peak hours, the resource is automatically increased.
Backup and SLA: Data is backed up regularly and the service level is guaranteed by contract.
Frequently Mixed Things
Can be confused with PaaS. SaaS is the finished application, it is for the end user. PaaS is the platform on which software developers run their applications. IaaS is even lower: The server, disk and network are rented, and you install the rest.
Use in Different Disciplines
Municipal water: Subscribing to the grid instead of drilling a well.
Flat for rent: The maintenance is on the owner, the use is on you.
Public transport: Getting transportation service without owning a vehicle.
Questions and answers
Where is my data stored when using SaaS?
It is stored in the provider's data centers. Be sure to review the backup, encryption and access conditions in the contract.
What happens if the internet goes out?
Online features stop. Some products offer limited offline operation, but full use requires internet.
What happens to my data if I cancel the subscription?
A transition period is usually given. You must export your data before the period expires. Learn the export format before cancellation.
What is the difference with PaaS?
It is a SaaS ready application, you log in and use it. PaaS is an empty platform, you install your own software on it.
Related terms
Related tools
This explanation was written in plain language for TreScout with AI and machine-translated from the Turkish original · the Turkish version prevails. If something looks wrong or missing, write to hello@trescout.com. Read in Turkish →