Amazon API Gateway

API (Application Programming Interface) is a set of protocols and definitions that aid in the development and integration of software applications.

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Amazon API Gateway

Let's begin with a quick introduction to what an API is. API (Application Programming Interface) is a set of protocols and definitions that aid in the development and integration of software applications. In addition to that, it also facilitates your product’s ability to communicate with other products or services without knowing exactly how they are implemented. This feature, helps in saving time and spending while developing an application. There are request exchanges between the parties, and the API ensures and coordinates that the appropriate response is received for the requests exchanged.

It facilitates collaboration between IT and business teams. Business teams want their product or service to always be current and competitive, and APIs assist the IT team in dealing with these rapid changes by adapting to current environments and providing flexibility. Cloud-native application development is a visible way to accelerate development by connecting a microservices application architecture via APIs.

Amazon API Gateway is a fully managed service that enables developers to easily create, publish, maintain, monitor, and secure APIs of any size. APIs function as the "front door" through which applications access data, business logic, or functionality from your backend services. API Gateway enables you to build RESTful APIs and WebSocket APIs for real-time, two-way communication applications. Containerized and serverless workloads, as well as web applications, are supported by API Gateway.

API Gateway manages all aspects of accepting and processing hundreds of thousands of concurrent API calls, such as traffic management, CORS support, authorization and access control, throttling, monitoring, and API version management. There are no minimum fees or start-up costs with API Gateway. You are charged for the API calls you make. Without an API gateway, you would have to connect the APIs directly to user-end applications, making it difficult to manage responses, secure, develop, and make updates to your product or service. An API Gateway can handle any type of interaction between your website, web or mobile application, or even IoT devices, and your micro-services.

Accessibility and Convenience

The Amazon API Gateway supports two types of APIs that are used by both API developers and application developers:

1) RESTful API: These APIs use HTTP methods including GET, POST, PUT, and DELETE to communicate with servers. These are the same techniques that are used to access web pages and create resources, and they are primarily used for serverless workloads and HTTP back ends.

2) WebSocket API: This API enables real-time client-server communication, including online gaming, stock trading, and web chat services. Unlike conventional HTTP APIs, which require the client to initiate communication, the WebSocket API can transmit messages to the client without their being requested.

How does the Amazon API Gateway work?

The name, an HTTP function, how the API interfaces with services, and how requests and transfers are handled are the four requirements for an API developer. Following that, they employ an SDK (Software Development Kit), which may include specific SDKs for mobile and web applications that permit integration with software that issues API queries. Multiple API versions can be used concurrently by developers, further enhancing the flexibility already offered by Amazon API Gateway.

Users of AWS can keep track of API calls made through the Amazon API Gateway. Through Amazon CloudWatch, they may also view, retrieve, and troubleshoot logs.

Amazon API Gateway

Amazon Gateway manages incoming API call traffic in one of two ways:

1) Caching: The majority of API requests typically use the same data and produce the same outcomes. Instead of processing each call, caching makes a common API response available as a response, which lowers the number of API calls processed and boosts overall speed.

2) Throttling: The user can restrict the number of API calls performed per hour or per day with this functionality. It aids in maintaining an application's or service's performance during unforeseen spikes in API calls over a predetermined period of time.

Amazon API Gateway also provides security by managing API access with access keys. Working with AWS IAM and Amazon Cognito, it grants API access.

Benefits of the Amazon API Gateway 

Efficient API development

API Gateway allows you to run multiple versions of the same API at the same time, allowing you to quickly iterate, test, and release new versions. There are no minimum fees or upfront commitments, and you only pay for API calls and data transfers. 

Provide end users with the lowest possible latency for API requests and responses by leveraging Amazon CloudFront's global network of edge locations. To ensure that backend operations can withstand traffic spikes and that backend systems are not called unnecessarily, throttle traffic and authorise API calls

For API requests, API Gateway offers a tiered pricing model. You can reduce your costs as your API usage per region increases across your AWS accounts by paying $0.90 per million requests at the highest tier. 

The API Gateway dashboard, which allows you to visually monitor calls to your services using Amazon CloudWatch, displays performance metrics and information on API calls, data latency, and error rates. 

Use AWS Identity and Access Management (IAM) and Amazon Cognito to grant access to your APIs. If you use OAuth tokens, API Gateway supports both OIDC and OAuth2. You can use AWS Lambda to execute a Lambda authorizer to support custom authorization requirements. 

RESTful APIs can be created using HTTP APIs or REST APIs. HTTP APIs are the most cost-effective way to build APIs for the vast majority of use cases, costing up to 71% less than REST APIs. REST APIs can be used if your use case necessitates API proxy functionality as well as management features in a single solution. 

Create robust API's and Launch new services faster as developers focus on building core business services using API Gateway !!

Lets discuss your requirements to take your business to a next level of productivity and services.

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