The idea of ​​multi-tenancy, the sharing of resources by many tenants, is central to cloud computing. It allows a single instance of the software to serve multiple organizations. SaaS requires sharing application servers across multiple tenants for low operational costs. This article discusses the concept of cloud computing in single-tenant and multi-tenant environments. Multitenant applications are very useful for higher utilization of hardware resources and better ease of maintenance.Keywords:Cloud computing,Multitenancy,Saas,usage.1.IntroductionThe word cloud is used as a metaphor for the Internet, based on the standardized use of a cloud-like shape to denote a network. A cloud is a combination of hardware, networks, storage, services, and interfaces that helps provide computing as a service. Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources that can be rapidly provisioned and released with minimal management effort or service provider interaction. Additionally, the platform provides on-demand services to users for always-available access anywhere, anytime, anywhere. The cloud computing platform provides scalability, availability, and utility computing for services over the Internet. The cloud model includes five essential features: on-demand self-service, broad network access, resource pooling, rapid elasticity, and metered services. It also offers three main service models such as Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS), and four deployment models are public, private, community, or hybrid. The cloud architecture must illustrate the platform and software components... middle of paper... achieved through configuration and customization. The SaaS application must handle a large amount of data. Storing and retrieving large amounts of data is critical to application performance and security. The SaaS application can also be developed using a basic programming framework such as JDK for Java and .NET. Overall SaaS performance will be increased by providing services to a large number of customers simultaneously. YOU. Conclusion and Future Work Multi-tenancy covers subscription, monitoring and billing, security and privacy, scalability, high availability and reliability, management and administration for separate tenants, runtime customization for tenant, the customizable GUI, the customizable business logic. Our future work will be to implement the proposed architecture and develop an innovative application, capable of satisfying the demand of many customers.