Aura vs Lightning Web Components: What You Need to Know

Lightening vs. AuraSalesforce has been on a fantastic journey with Lightning components. Years ago, Salesforce developers were using a unique HTML tag-based Mark-up language known as Visual force pages and Apex as their controller for logic.

In 2014, Salesforce launched the Lightning Component framework supported by the Aura programming framework. Since the web standards offered limited feasibility to build large-scale web applications at the time, Aura came with its component-driven model that allowed developers to build large-scale client applications on the web.

Fast-forward to 5 years from the time of Aura; the web stack has seen an unprecedented level of innovation and standardization that transformed it from being a rudimentary page-rendering platform to a web development platform.

Lightning Web Components: An Introduction

Lightning Web Components (LWC) is a stack of modern lightweight frameworks built on the latest web standards. It is a DOM (Document Object Model), element created through reusable code and is used to generate a dynamic interface without using JavaScript or building a Library. This feasibility makes it quick and seamless, saving the developers a ton of time and effort on the Web Stack. Let’s look at some of its remarkable features:

  • Improved performance of the component as most of the code is recognized by the native web browser engine and web stack
  • Ability to compose applications using smaller chunks of code since the crucial elements that are required to create a component is part of the native web browser engine and web stack
  • Increase in the robustness of the applications built using LWCs as they are inclusive of the said modern web standards.
  • Parallel interoperability and feasibility to use both Lightning Web Components and Aura components together in the applications with no visible differentiation to the end-users

If LWCs get the same UI result, what is in store for Web Stack?

  • Languages like React, Angular and the Lightning Components Framework which use JavaScript are now part of the modern Web Stack. Consequently, the Web Stack no longer requires an additional mid-layer which used to be a challenge for the developers working with Aura as it impacted the speed and performance of the applications.

web stack transformation

    • The addition of above features give more power to our web Stack to create a lightning UI component, It doesn’t require a mid-Layer to the browser which impacts our speed and performance. This one is the main reason developers are struggling within Aura and now LWC will work for them.
    • Aura-based Lightning components are built using both HTML and JavaScript, but LWC is built directly on the Web stack.
    • Web components can easily interact with the Aura component and can handle the events of one another
    • A developer who works on LWC is not only using coding skills on a particular framework but in other frameworks like React or Angular, which are based on the Web Stack.
    • In addition to the latest features, LWC still embraces the features like the Security, Lightning Data Service, and Base lightning components from Aura.
    • Creating an LWC is fast as it no longer requires the user to download the JavaScript and wait for the engine to compile it before rendering the component.
    • It is possible to include LWC in Aura, but not the other way around as the generic elements cannot be added to the custom components.

lightening components

Next Best Action

If your organization is already using Aura-based lightning components and the development team is highly skilled with the Aura framework, here’s the good news — the Aura Framework is not going anywhere. However, LWCs are the future of lightning development.

For the most part, if you are building new functionality consider using LWCs to benefit from the increased native operation in the browser and performance. Just starting? LWCs are the future.

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