Three-Tier Architecture Explained

Three-tier architecture is a software architecture pattern that separates an application into three distinct layers, enhancing scalability, maintainability, and manageability. The three tiers are: 1. Presentation Tier This is the user interface layer, where users interact with the application. It...

Three-tier architecture is a software architecture pattern that separates an application into three distinct layers, enhancing scalability, maintainability, and manageability. The three tiers are: 1. Presentation Tier This is the user interface layer, where users interact with the application. It handles user input and displays data to the user. This layer can include web browsers, mobile apps, or any other client-side interfaces. ExamplesHTML, CSS, JavaScript, and frameworks like React or Angular. 2. Application Tier (Logic Tier) This middle layer contains the business logic of the application. - It processes requests from the presentation tier, performs calculations, makes decisions, and communicates with the data tier. It serves as a mediator Three-tier architecture (Cont.) 3.Data Tier This layer is responsible for data storage and management. It handles database interactions, including data retrieval, storage, and manipulation. This tier is where the data is persisted. Examples: Database systems like MySQL, PostgreSQL, MongoDB, or Oracle. Benefits of Three-Tier Architecture - Separation of Concerns: Each layer can be developed, managed, and scaled independently. - Scalability: Different tiers can be scaled based on demand (e.g., adding more servers to the application tier). - Maintainability: Changes in one tier typically do not affect others, making it easier to manage updates and modifications. - Flexibility: Different technologies can be used for each layer, allowing for the use of  SAS is a command-driven software package used for statistical analysis and data visualization. It is available only for Windows operating systems Bolt-ons" refer to additional features, components, or services that can be added to a base product or system to enhance its functionality or capabilities. This term is commonly used in various contexts, including: Back office vs Front office software In software development, the term "vanilla" refers to a version of software that is in its original, unmodified state. Configuration vs Customization Configuration is about setting up software using available options to suit specific needs, while customization involves deeper modifications to create a tailored solution