Understanding API Meaning, Types, and Importance.
                     Understanding API: Meaning, Types, and 
Importance
 An API is a set of programming code that enables data 
transmission between one software product and another. 
It also contains the terms of this data exchange.
What is an 
API?
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 Open APIs: These types of APIs are publicly available to use like 
OAuth APIs from Google. It has also not given any restriction to 
use them. So, they are also known as Public APIs.
 Partner APIs: Specific rights or licenses to access this type of API 
because they are not available to the public.
 Internal APIs: Internal or private. These APIs are developed by 
companies to use in their internal systems. It helps you to 
Types of API enhance the productivity of your teams.
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 It offers a valuable service (data, function, audience,.).
 It helps you to plan a business model.
 Simple, flexible, quickly adopted.
 Managed and measured.

Features of Offers great developer support.
API
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 Application Programming Interface acronym API helps two 
different software's to communicate and exchange data with each 
other.
 It helps you to embed content from any site or application more 
efficiently.
Why would  APIs can access app components. The delivery of services and information is more flexible.
we need an 
API?
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 High-Level APIs: High-level APIs are those that we can generally use in REST 
form, where programmers have a high level of abstraction. These APIs 
mostly concerned about performing a limited functionality.
 Low-Level APIs: This kind of APIs has a lower level of abstraction, which 
means they are more detailed. It allows the programmer to manipulate 
functions within an application module or hardware at a granular level.
Communication 
level of APIs
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 Batch Distribution / Drive Traffic.
 Expand Footprint.
 Feature Development
 Explore New Business Models.
 Content Acquisition Advance Business Model.
Application of 
 Internal Content Distribution / Innovation.
API:
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 Database APIs: Database APIs enable communication between an 
application and a database management system. 
 Operating systems APIs: This group of APIs defines how 
applications use the resources and services of operating systems.
APIs by use 
cases
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 Remote APIs: Remote APIs define standards of interaction for 
applications running on different machines. 
 Web APIs: This API class is the most common. Web APIs provide 
machine-readable data and functionality transfer between web-
based systems which represent client-server architecture.
APIs by use 
cases cont.
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 Numerous content elements make good documentation, such as:
a quick start guide
authentication information
explanations for every API call (request)
examples of every request and return with a response description, error 
messages, etc.
API samples of code for popular programmatic languages like Python, Java, 
JavaScript, or PHP;
documentation  tutorials
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 Postman: Postman is a plugin in Google Chrome, and it can be used for 
testing API services. It is a powerful HTTP client to check web services.
 Ping API: Ping-API is API testing allows us to write test script in JavaScript 
and Coffee Script to test your APIs. 
API Testing tools
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