App Development Glossary
Clear, concise definitions for common app development terms. Whether you're a startup founder or enterprise CTO, understand the technology behind your next project.
Plain-language product and software definitions designed to rank and explain fast.
Plain-language software definitions designed to explain and rank quickly.
What is Agile Development?
Agile development is an iterative approach to software development where work is divided into short cycles called sprints (typically 1-2 weeks), allowing teams to deliver working software incrementally and adapt to changing requirements.
DevelopmentWhat is CI/CD?
CI/CD stands for Continuous Integration and Continuous Delivery — an automated software development practice where code changes are regularly built, tested, and deployed, enabling faster and more reliable app releases.
DevelopmentWhat is Cloud Computing?
Cloud computing delivers computing resources — servers, storage, databases, networking — over the internet on a pay-as-you-go basis, eliminating the need to own and maintain physical hardware.
InfrastructureWhat is Cross-Platform Development?
Cross-platform development is an approach to building software applications that work on multiple operating systems (iOS, Android, web) from a single shared codebase, reducing development time and cost.
DevelopmentWhat is DevOps?
DevOps is a set of practices that combines software development (Dev) and IT operations (Ops) to shorten the development lifecycle, increase deployment frequency, and deliver reliable software faster.
DevelopmentWhat is Firebase?
Firebase is Google's Backend-as-a-Service platform that provides authentication, real-time databases, cloud storage, hosting, analytics, and serverless functions — enabling developers to build apps without managing servers.
InfrastructureWhat is Flutter?
Flutter is Google's open-source UI framework for building natively compiled applications for mobile, web, and desktop from a single Dart codebase, known for fast development and beautiful custom interfaces.
TechnologyWhat is Git?
Git is a distributed version control system that tracks changes to code files, enables multiple developers to collaborate on the same project, and maintains a complete history of every modification ever made.
DevelopmentWhat is GraphQL?
GraphQL is a query language for APIs that lets clients request exactly the data they need in a single request, unlike REST APIs where each endpoint returns a fixed data structure.
DevelopmentWhat is Microservices Architecture?
Microservices architecture structures an application as a collection of small, independent services that each handle a specific business function and communicate through APIs. Each service can be developed, deployed, and scaled independently.
ArchitectureWhat is OAuth?
OAuth (Open Authorization) is an industry-standard protocol that lets users grant third-party applications limited access to their accounts on another service without sharing their password. It powers "Sign in with Google," "Sign in with Apple," and similar social login buttons.
SecurityWhat is React Native?
React Native is Meta's open-source framework for building mobile applications using JavaScript and React, allowing developers to create native iOS and Android apps from a shared codebase.
TechnologyWhat is Responsive Design?
Responsive design is a web design approach that makes web pages render correctly on all screen sizes — from mobile phones to desktop monitors — using flexible grids, fluid images, and CSS media queries.
DesignWhat is SaaS?
SaaS (Software as a Service) is a software delivery model where applications are hosted in the cloud and accessed via the internet on a subscription basis, eliminating the need for local installation and maintenance.
BusinessWhat is Technical Debt?
Technical debt is the accumulated cost of shortcuts, quick fixes, and suboptimal decisions in a codebase that make future development slower and more expensive. Like financial debt, it compounds over time if not addressed.
BusinessWhat is TypeScript?
TypeScript is a programming language developed by Microsoft that adds static type checking to JavaScript. It catches bugs at compile time instead of runtime, making large codebases safer and easier to maintain.
DevelopmentWhat is UI/UX Design?
UI/UX design combines User Interface (UI) design — the visual look and interactive elements of an app — with User Experience (UX) design — the overall feel, flow, and ease of use that determines how satisfying the product is to use.
DesignWhat is User Testing?
User testing is the practice of observing real users as they interact with your app or prototype to identify usability problems, validate design decisions, and gather feedback before and after launch.
DesignWhat is Wireframing?
Wireframing is the process of creating simplified visual blueprints of an app's screens and layout. Wireframes show the structure, content placement, and user flow without visual design details like colors, fonts, or images.
DesignWhat is a Backend?
The backend is the server-side part of an application that handles data storage, business logic, authentication, and API communication. Users never see it directly, but it powers everything the frontend displays.
DevelopmentWhat is a Progressive Web App?
A Progressive Web App (PWA) is a website built with modern web technologies that delivers an app-like experience — including offline access, push notifications, and home screen installation — without requiring download from an app store.
TechnologyWhat is a REST API?
A REST API (Representational State Transfer Application Programming Interface) is the most common way for apps to communicate with servers. It uses standard HTTP methods (GET, POST, PUT, DELETE) to perform operations on resources identified by URLs.
DevelopmentWhat is an API?
An API (Application Programming Interface) is a set of rules and protocols that allows different software applications to communicate with each other, enabling data exchange and functionality sharing between systems.
DevelopmentWhat is an MVP?
An MVP (Minimum Viable Product) is the simplest version of a product that includes only core features needed to validate a business idea with real users and gather feedback for future development.
BusinessWhat is an SDK?
An SDK (Software Development Kit) is a collection of tools, libraries, documentation, and code samples that developers use to build applications for a specific platform, framework, or service.
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