The present-day virtual reality is a dynamic world whose borders are expanding daily. Its basic features are growth and integration. Growth means more and more software, websites, platforms, and resources. These elements are not isolated. They are involved in the process of constant integration.
Integration implies the existence of features that are identical or, at least, have very much in common. These features make the basis for integration. On the other hand, it means that they can be reproduced, and developers do not have to write the code from scratch each time they come across something similar. An SDK can help developers write less typical codes and save their time for creative work.
What Is an SDK?
Today, SDKs have become so popular that you do not even have to write the complete phrase ‘What does SDK mean?’ in the Google search bar. The engine will prompt the result before you finish writing.
SDK stands for a Software Development Kit. It means a set of APIs (Application Programming Interface) and other tools that will help partner systems to integrate by creating the necessary applications that will ‘talk’ to the target software.
An IT specialist usually gets the SDK from the basic system or platform developer. In other words, an SDK is a package of libraries intended for the user or client so that the latter can start working with the target system quickly and easily. The main idea is to write and test high-quality code just once and then reuse it multiple times.
In addition to saving time by writing less code, an SDK ensures the reproduction of the same code in different contexts. The reduplication of libraries results in the unification of the whole system while making it easier to search for and detect mistakes.
The result will be a higher speed of launching new projects, a higher amount of well-tested and reliable codes, a lower percent of mistakes, more comprehensive documentation support of the project (as more typical codes imply more typical documentation), and more convenient conditions for the integration of new developers.
SDK vs API
The difference between SDK and API is that APIs are ‘building blocks’ for SDKs. The latter are sets of APIs, that is, tools and functions in the form of an interface that enable the developer to create new applications for interaction with the target program.
This does not mean that the use of all the SDK elements is obligatory. A developer can choose and configure the APIs to expand the functionality of the product or project and link it with the other ones.
Both APIs and SDKs can be referred to process documentation. In other words, it is internal industry-specific documentation used by managers, engineers, and testers.
A simple example of an API is a price tracker or price tracking tool integrated into an online market website. It can be an alert-type tracker that will send you notifications when the price reaches the target value. It can be visually represented as a curve or a diagram.
Another example is the Weather Underground app developed by IBM. It can be accessed for a certain fee and is often used by weather services that integrate the app into their architecture so that their users can get the meteorological data.
SDK vs API: Comparison Table
| Feature | SDK (Software Development Kit) | API (Application Programming Interface) |
|---|---|---|
| Main purpose | Provides a full toolkit for building applications and digital products | Allows different systems and apps to communicate with each other |
| Components | Includes libraries, tools, documentation, code samples, and utilities | Usually includes endpoints and protocols for sending requests |
| Installation | Developers usually install the SDK locally before development | APIs normally do not require installation |
| Platform example | For example, the Android SDK includes tools for mobile development | Many APIs can be used across different platforms |
| Version control | SDK tools like SDK Manager help manage SDK packages and updates | APIs may provide versioned endpoints but no management tools |
| Compatibility | Developers must select the correct API level to support specific platform versions | API compatibility depends on endpoint versions |
| Programming support | SDKs support multiple programming language options | APIs can be used from many languages including JavaScript |
| How it works | SDK uses prebuilt libraries and components | APIs rely on sending requests and receiving responses |
| Development process | Developers can run applications locally using SDK tools | APIs typically run as remote services |
| Scope | A broader development toolkit including APIs and other tools | A specific interface used for communication |
| Complexity | SDK simplifies development because it hides complex implementation details | APIs may require more manual coding |
What Is SDK Documentation?
SDK documentation is a set of supporting documents that help developers learn how to integrate with the target system.
An SDK usually provides broader documentation coverage because it includes installation instructions, tutorials, API references, and practical samples. These materials help developers quickly get started, configure access using a license or API key, and begin testing their applications.
Having an SDK does not mean that you will have all the necessary materials. You will still have to write content (at least for the purpose of reducing the number of questions from clients), but the amount of documentation will be lower.
Tips for Creating SDK Documentation
SDK is a complex topic as it requires a technical writer to know how a product works. A technical writer has to combine the qualities of a user, a developer, and a writer. This might be a real challenge and often a cause of mistakes occurring in documentation.
Usually, these mistakes are technical: mistakes referring to the misuse of terminology or understanding of the processes. Generally, there are two ways to avoid it. The first one is to let engineers write SDK documents themselves. This will eliminate technical mistakes, but the problem is that developers are not writers, and they often have a very vague understanding of what a document should look like. It is like asking a baker to write a cookbook. The baker might be good at writing a short recipe but will never succeed in writing a book without some help from a good journalist, editor, or copywriter.
The second way is to ensure collaboration between technical writers and the development team. It can be done by letting the writers take part in the development process, at least at the initial stage, to get acquainted with the product and get the knowledge of the right terminology. To avoid inaccuracies, developers can check the written material.
SDK Documentation Example
Google Cloud SDK documentation looks like a good SDK documentation example. Like all other software development kits, Google Cloud SDK consists of two parts conventionally called the tutorial and the reference part.
The tutorial gives an overview of all APIs included in SDK (gcloud, gsutil, and bq). It also contains step-by-step instructions on installing the latest Cloud SDK version.
The reference part gives important links like links to the official updates of the SDK documentation (Ubuntu releases, for example).
SDK Documentation With ClickHelp Tool
Creating SDK documentation will be much easier with a help authoring tool. Its wide functionality allows it to be used as an SDK documentation tool or an SDK documentation generator. It has many features aimed at achieving two main functions: improving the look of your docs and enhancing the teamwork of technical writers.
A simple example of how ClickHelp works is that it can present fragments of code or code examples in an easy-to-read format. This feature is called syntax highlighter. It is also used to separate code fragments from regular text using a different color.
A powerful WYSIWYG editor should also be mentioned. It helps authors to produce SDK docs that are illustrated by content that looks as close as possible to the final product, like a web page, etc.
All of the above refers to the look of the documents but there are more important things that will enhance your team efficiency. It is single-sourcing which enables all authors to refer to the same source so that there are no clashes in terminology, definitions, or larger fragments of text.
ClickHelp tool also has such teamwork features as the distribution of roles between project members, topic auto-locking, topic statuses, email notification, etc.
All these features combined can help you produce great SDK docs.
Conclusion
The general idea behind an SDK is avoiding routine and saving time for creative work. An SDK is a powerful means of integration of websites, platforms, and software. Giving developers a set of documents describing how to work with APIs finally makes the acquisition of new clients easier.
Good luck with your technical writing!
ClickHelp Team
Author, host and deliver documentation across platforms and devices
FAQ
What does SDK stand for?
SDK stands for Software Development Kit. It is a collection of tools, libraries, APIs, documentation, and code samples that help developers build applications that interact with a specific platform, system, or service.
What is the main purpose of an SDK?
The main goal of an SDK is to simplify and speed up the development process. Instead of writing complex code from scratch, developers can reuse ready-made modules and APIs to integrate their applications with existing software or platforms.
What is the difference between an SDK and an API?
An API (Application Programming Interface) is a set of functions and protocols that allow different software systems to communicate. An SDK is a broader toolkit that often includes multiple APIs along with documentation, libraries, debugging tools, and other resources needed for development.
Why are SDKs important for developers?
SDKs save time and reduce development effort. They provide tested code libraries, standard documentation, and integration tools, which help developers launch projects faster, reduce errors, and maintain consistent functionality across applications.
What is SDK documentation?
SDK documentation is a collection of guides and reference materials that explain how to use the SDK. It typically includes installation instructions, API descriptions, code examples, tutorials, and integration guidelines.
What is the difference between an SDK and an API?
An API (Application Programming Interface) is a set of functions and protocols that allow different software systems to communicate. An SDK is a broader toolkit that often includes multiple APIs along with documentation, libraries, debugging tools, and other resources needed for development.
