What is Apex?

Nov. 8, 2022 · 5 minutes


Before understanding Apex, we should have a basic knowledge of Salesforce. So, let’s take a look and understand what Salesforce is. Although we all working in an IT company, I have heard the word "Salesforce" but don’t know what it exactly is? So Salesforce is the #1 CRM (Customer Relationship Management) platform that is used across the globe which allows its customers to develop and use their application online without the need of buying the infrastructure, doing the setup and managing everything. Before Salesforce, companies used to host their CRM solutions on their own server, and it took months and sometimes years to set up everything and the cost for all this became too high to afford. Salesforce then came up with the solution of SaaS (Software as A Service) and replacing the lengthy installation process, expensive license contracts just by allowing the facility to maintain everything on Cloud and that by paying only a few dollars month’s subscriptions. Its lightning platform allows the customers to only concentrate on creating the application in the fastest, easy and effective way.

After understanding what the Salesforce is you must be thinking about Apex and its role in Salesforce. So, Apex is basically a programming language like Java, Python, etc. Apex is strongly typed (which means that we have to explicitly define the data type of data and compiler will consider the data of the specified type and no other type), object-oriented (based on the concept of objects like Java) programming language which is used by the developers creating an application on Flow.com server. Developers can execute flow and transaction control statements along with making the API calls to the Flow.com API using Apex. Apex revolutionizes the way developers create on-demand applications. It allows the customers to add business logic to their application.

Features of Apex

Features of Apex

  • Easy to Use: Apex is very easy to use as it uses Java-like syntax which is quite easy to understand and code. Apex uses simple loop syntax, block and conditional statement syntax, object and array annotation which is quite similar to Java syntaxes.
  • Integrated: Apex has inbuilt support of DML operations like Insert, Delete, Update and Inbuilt DML exception handling. It supports looping that allows the processing of multiple records at a time. It has support for SOQL and SOSL query handling which return a set of subject records.
  • Strongly Typed: Apex is a strongly typed language which means that the user needs to define the data type of every variable which does not create any confusion at compile time.
  • Multitenant Environment: Apex runs in a multitenant environment like other lighting platforms which means only a single instance runs on the server and serves multiple tenants.
  • Easy to Test: Apex provides built-in support to create and run the unit test. It includes the test result so that the user can get to know how much code is covered. It ensures the executing of the whole code before any platform upgrades.

When Should We use Apex?

Apex allows its developers to create complex CRM application providing access to the Salesforce database and client-server interfaces to create third-party SaaS application. It also allows customizing pre-built applications according to the complex business requirements. Apex provides so many facilities to create an application. Below are some important reasons for choosing Apex for development of an application:

  1. Developers can use Apex to create web services that are integrated with a different system. Applications that interact with different applications using API calls are easy to develop using Apex.
  2. To create applications that require complex business logic and are not supported by the workflow.
  3. Create email services.
  4. An application that uses complex transactional logic where the whole transaction records have to be maintained and not only a single record.
  5. Perform some logic where records need to be updated as in case of triggers. (the event is injected when some situation occurs and records are updated).

When Should We Use Apex?

How do Apex Work?

Apex runs entirely on the on-demand lighting platform and all the data (code) is saved on the cloud. So, there is no overhead of storing the code and maintaining it.

For Developers:

When the developer writes the code and saves it to the platform application server, the server first compiles the code into a set of instructions that can be understood by Apex runtime interpreter and then saves those instructions as metadata.

For End-Users:

When the end-user triggers to execute the Apex code, the platform application server retrieves those compiled instructions which are saved as metadata and send them to runtime interpreter and then sends the result to the clients.

How Does Apex Work?


  • No need for buying the infrastructure and hire IT people as all the facilities are provided by Salesforce.
  • Cost-effective, as the cost of maintenance of the application, the licensing cost of various software is quite high than buying the monthly subscription of Salesforce.
  • Security of application, full Authentication and Authorization is provided to the end-users by Salesforce for accessing the application.
  • It is easy to develop an application in the Salesforce.com platform for developers as developers can use the existing applications or make changes in the existing ones according to business needs.
  • Provides on-demand and multi-tenant platform. Moreover, Apex allows its developers to access the Salesforce.com backend database to third-party SaaS applications.


How This Technology Will Help you in Career?

As every industry is moving towards cloud from IT and CRM is working great with that helping the companies to reduce the overhead of infrastructure and all and rather focus on expanding the business. Apex, the language used in Salesforce development is getting acceptable by big organizations like AWS, U.S. Bank, Dell, Accenture, Deloitte, farmers insurance, etc. as it helps in enhancing their business. With the goal of moving towards an on-demand and multi-tenant platform, organizations are looking for people who have good knowledge in Salesforce development like Salesforce Development, Salesforce Admin, Change Management, Territory Management, Produce Catalog, Deployment Strategies and much more. It is loud and clear how learning Salesforce can change the whole career path and open new jobs for IT professionals.

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