What Is Three-Tier Architecture?

Three-tier architecture is a network arrangement in which a software application's components are separated into three general tiers. The first presentation and graphic user interface holder are where it can be accessed directly by the human user. The second tier acts as an intermediary between the UI and an application server that carries out business logic and processing of data; finally, the third tier holds persistent storage like hard disks, tapes or even server memory. Data access and user interface are on separate platforms in a three-tier architecture. It allows them to be more easily developed and maintained. Leverage the three-tier architecture to easily swap out a backend without migrating your applications and databases. Three-tier architecture is a client–server software model in which all applications are divided into three logical parts: the user interface, the application logic and data access components. Can implement the user interfaces(UI) on different platforms such as desktop PC, smartphones or tablets as native applications, web apps, mobile apps, voice interfaces etc. The business logic is implemented on any platform, such as a desktop PC with SQL Server or MySQL database as SQL Server Professional or MySQL Server Personal Edition. All the data access and storage components are also part of a database management system (DBMS). It also ensures flexibility; this application can scale quickly as your company grows. It provides excellent freedom to development teams who can independently update or replace only specific application parts without affecting the product as a whole. The application can be scaled up and out rather quickly by detaching the front-end application from the databases selected according to the customer's needs. New hardware, such as new servers, can also be added later to deal with massive amounts of data or particularly demanding services. You don't need to wait for your infrastructure to evolve to accommodate new technologies. The three-tier architecture provides greater flexibility and agility, so you can adopt new technology as soon as it becomes available.