The parts working together
An online shop might use code in a customer’s browser, software on a server to process orders, a database to store them, and cloud storage for images. Together, these make up its tech stack. Teams may also count the tools they use to build, host, and monitor the shop.
Why the choices matter
A stack affects cost, security, hiring, and how easily a team can change the product. Each part must work with the others, so teams weigh new tools against what they can support and maintain.