What are WEB APIs and why are they needed?

In today's digital world, most services and applications interact with each other using the API (Application Programming Interface). The WEB API is a programming interface that allows various applications and services to exchange information over the Internet. Let's take a closer look at what WEB APIs are and why they are so important in developing modern web services and applications.
What is a WEB API?
The WEB API (Web Application Programming Interface) is a set of well–defined methods, rules, and protocols that allow one software product to interact with another over the Internet. Simply put, the WEB API acts as an intermediary between the client (for example, a website or mobile application) and the server, providing the exchange of information and data in a standardized form.
The most common types of WEB API:
REST (Representational State Transfer)
SOAP (Simple Object Access Protocol)
GraphQL
RPC (Remote Procedure Call)
XML-RPC
JSON-RPC
gRPC
WebSocket
How do WEB APIs work?
WEB APIs function as follows:
Client request
Request processing
Response from the server
The role of the Web API in modern software development
Web APIs are central to modern software development, providing flexibility and versatility in the integration and interaction of various systems. They facilitate rapid development by facilitating data exchange between a variety of platforms and devices, from mobile phones to corporate servers.
Advantages of the REST API
REST APIs have a number of advantages:
Easy to implement and use.
Using standard HTTP methods.
Easy integration with different platforms and programming languages.
Scalability and efficiency.
Ease of debugging and testing.
Why do we need WEB APIs?
Application integration
WEB APIs allow different applications to interact with each other, which significantly speeds up the development and integration processes. For example, you can easily integrate payment systems, social networks, or delivery services into your app.
Mobile applications
WEB APIs are ideal for mobile applications. This allows you to create a single logic on the server, and mobile applications (for iOS and Android) use the same API to interact with the server.
Scalability
Properly designed WEB APIs make it easier to scale applications. You can increase the load on the servers by adding new server capacities or by distributing the load across multiple servers.
Saving resources
By using the WEB API, companies can significantly save time and money on development, as the API allows them to reuse ready-made services and components.
Increased security
WEB APIs provide an additional layer of security, as access to data and services is strictly controlled through well-defined rules and methods.
Examples of using the WEB API
E-commerce
Social network
Geolocation and maps
Media services
IoT and Smart home
Financial services
SPA Development (Single Page Applications)
Development of SaaS services
The Future of the Web API
The future of the web API is connected with the development of cloud technologies, artificial intelligence and the Internet of Things (IoT). WEB APIs will play a key role in connecting systems and services, becoming more intelligent, secure, and efficient. Standards that simplify API interactions between different ecosystems are also expected to increase in popularity.
Conclusion
WEB APIs have become an integral part of modern web application and service development. They allow applications to interact with each other, making it easier to integrate and scale projects. A well-designed API becomes an important competitive advantage, saving resources and increasing development efficiency.
Using the WEB API, developers can focus on creating unique features and features of their product without worrying about the technical details of integration. As a result, WEB APIs accelerate the process of bringing new products to market and significantly improve the quality of services.