The advancement of SaaS business models and cloud computing has given rise to a modern application development method known as the multi-tenant architecture. SaaS delivers applications as a service over the internet. Then, multi-tenancy aids quicker and more efficient scaling through resource sharing.
The multi-tenant data center market is estimated to reach $48.4 billion by 2027 with a CAGR of 7.49%.
Read on to get a full overview of the multi-tenancy architecture in application development.
Defining Multi-Tenant Architecture
Multi-tenant architecture is a shared infrastructure design where multiple tenants operate separately within isolated environments. In this model, a single software serves multiple tenants.
Each tenant's data and processes are isolated and secure while being able to access shared resources, policies, and tools.
Examples of tenants include business units, application groups, product lines, and internal development teams.
How Does It Work?
Multi-tenancy involves the creation of separate and isolated environments within a single software infrastructure, like a server or cloud platform. This is achieved by splitting the data storage and processing operations, with each tenant receiving their own dedicated space in the infrastructure.
Tenants comprise user groups inside a company, user groups outside a company, and customers who utilize the company's product or service.
Since each multi-tenant environment is isolated, it can be personalized to meet the requirements of each tenant without affecting other systems. Tenants can design their own user interface and set up their own security guidelines. Each domain can also have its own set of rules for resource allocation, access control, and related features.
Types of Multi-Tenancy Architecture
There are three core multi-tenancy models. These are distinguished by their complexity and cost. Let us read about these models in detail.
Single Application, Single Database
In this system, all tenants share one application and a single database. Schemas or tenant-specific markers keep every tenant's data isolated and distinct within the same database.
This is the simplest model for the maintenance and deployment of the application because there is only one database to handle. But it is disadvantageous for data security and scaling, as all the data is present in the same physical database. This increases the risk of leakage and breaches of data between tenants.
Single Application, Multiple Databases
In this model, tenants use a single application that connects to multiple databases. Each tenant has a database of its own. This provides data isolation while also providing data storage capabilities.
This system improves data security because each tenant's data processing is limited to its own database. However, handling multiple databases makes the infrastructure more complex, which may require more resources for management and maintenance.
Multiple Applications, Multiple Databases
In multiple applications, multiple databases, each tenant has its own application and a distinct database. This structure is best for isolation and security among all the multi-tenant infrastructures. This model is beneficial for tenants who need high levels of control over their digital ecosystems.
This system enables comprehensive personalization and optimization of each tenant's application. But it utilizes more resources and makes the processing more complex.
Key Properties of a Multi-Tenant Architecture
- Shared architecture with isolated tenant environments: Multiple tenants perform processes securely on the same physical infrastructure while the data and operations are partitioned.
- Personalization of tenants within a multi-tenant structure: Multi-tenancy allows each tenant to personalize their environment and business guidelines without impacting other systems. This enables data security, tailored resource management, and tenant isolation.
- Centralized regulation and standardization: Controls and policies are regulated centrally for consistency and compliance across tenants.
- Better scalability for teams and workloads: This architecture supports growth because of the efficient management of increasing tenants and their workloads.
Examples of Multi-Tenancy Infrastructures
Below are the most popular examples of multi-tenancy systems:
Public Cloud Multi-Tenancy
In a public cloud, customers share the same physical infrastructure and networks. Each customer has their own digital resources, isolated from those of other customers.
SaaS Multi-Tenancy
In a SaaS system, a single application and database can be used simultaneously by multiple customers. All the data of every customer is kept secure and secluded from one another, helping maintain data privacy.
Private Cloud Multi-Tenancy
This multi-tenancy system also shares applications and databases. But the cloud is specific to the organization and not shared with those who do not have access to that cloud.
Relevant Use Cases of Multi-Tenant Infrastructure
The most common use cases of multi-tenancy infrastructure can be seen in applications that use cloud computing, such as:
PaaS (Platform as a Service): Multi-tenant infrastructure helps PaaS providers like Microsoft Azure and Amazon Web Services deliver services to clients while sharing resources and reducing costs.
IaaS (Infrastructure as a Service): IaaS providers such as Google Compute Engine and DigitalOcean use multi-tenancy to allocate resources effectively and present cost-efficient outcomes to clients.
SaaS (Software as a Service): Multi-tenancy enables SaaS providers such as Microsoft, Adobe, and SAP to manage and deliver services to different customers effectively.
Wrapping Up on Multi-Tenancy Architecture
The use of multi-tenant architecture in application development improves scalability and eases regulatory compliance. Most organizations are also opting for this software architecture because they provide cost-effective solutions while delivering effective results.
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FAQs
Q: Which organizations gain the most by using multi-tenant infrastructure?
Ans: Organizations with global branches, SaaS providers, franchises, and partners who need regularized analytics delivered at huge scales benefit from using multi-tenancy infrastructure.
Q: How to differentiate between single-tenant and multi-tenant architecture?
Ans: Single tenancy has a single dedicated infrastructure, whereas multi-tenancy enables sharing infrastructure across isolated environments.
Q: What difficulties may surface while executing multi-tenancy infrastructure?
Ans: The challenges faced may include: - guaranteeing data partition and security, supervising resource consumption and performance, managing tenant customization and configuration, etc.
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