# Single Tenant vs Multi Tenant Systems

# Introduction

In cloud computing, there are two common designs: **single-tenant and multi-tenant.** They meet different business and technical needs.

# What is Tenant Architecture?

Before getting into details, let's explain what "tenant" means here. A tenant is a group of users, like a company or a single customer, **who share access to a software instance or environment with certain permissions.**

# Single Tenant Architecture

In a single-tenant architecture, a single instance of software and its underlying infrastructure serves one customer.

**Privacy and Security**: Provides better security and privacy because data isn't shared with other tenants.

**Customization and Control**: This setup allows you to change the environment and have more control over the infrastructure.

**Cost and Complexity**: Usually, it's more costly and complicated to handle because of the dedicated resources.

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1707758335798/e66fec9e-6fdc-4891-8f8d-a9a7fafda592.png align="center")

# Multi Tenant Architecture

On the other hand, a multi-tenant architecture has many customers using one software instance, keeping data separate at the application level.

**Cost Efficiency**: It's cheaper for both providers and customers because they share resources.

**Scalability**: It's simpler to grow, as new users can be added by increasing resources in the shared system.

**Less Customization**: There's not much room for changes because resources are shared.

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1707758434102/0cb92cb5-2bf6-4f29-8019-200a05c1c5a3.png align="center")

# Comparing Single Tenant and Multi Tenant

**Security and Privacy**: Single tenant is better because it has separate environments, while multi-tenant needs strong ways to keep data apart.

**Cost and Scalability**: Multi-tenant architectures offer better cost efficiency and scalability, but single-tenant solutions provide more control at a higher cost.

# When to use each?

Choose single tenant when you need top-notch security, want to change the system to fit your needs, and must have reliable performance. **For example, a hospital handling private patient details might use single tenant to meet strict privacy rules, tailor security, and keep the system running smoothly.**

Go for multi tenant to save money, grow easily, and manage less. **A company making a web app for many users can use multi tenant to cut costs by sharing resources, make updates easier, and add new users without big changes to the system.**