Apex

As you might expect from the company that delivered the world's first cloud computing platform, Salesforce also introduced the world’s first cloud computing programming language, Apex. Apex, whose syntax is similar to Java, the most popular programming language for Web apps, runs on the Lightning platform servers. Apex is specifically designed for building business applications to manage data and processes within the larger context of the Lightning platform. The language provides a uniquely powerful and productive approach to creating functionality and logic, allowing developers to focus just on the elements specific to their application, while leaving the rest of the “plumbing” to the Lightning platform.

The majority of this book is intended for readers who don't necessarily code, so Apex is beyond the scope of what we'll discuss here; however, you can learn everything there is to know at developer.salesforce.com/page/Apex.