Aura Vs LWC: Why You Should Learn LWC? | Salesforce Lightning Tutorial

What is LWC?

  • LWC stands for Lightning Web Component 
  • It is the new programming model on which we can build Lightning Components. 
  • It uses the latest web standards. 
  • It can also communicate with the existing aura components and deliver unparallel fast performance. 

What is Aura?

  • Aura is the existing programming model on which we can also build components. 
  • It uses old web standards. 
  • It will be obsolete by Salesforce in the upcoming years. 
  • It is not future-proof and slower in comparison to LWC. 

dont miss out iconDon't forget to check out: Create and Insert Record in LWC Without Using record-edit-form | Salesforce Developer Guide

Why Does Salesforce Come with LWC when Aura is Already There?

  • In 2014, lightning component framework was launched by Salesforce along with Aura Programming Model. 
  • Actually, Aura is very different from other frameworks as most of the part is Salesforce-specific. 
  • It is very hard for a developer working on other technology to switch to Salesforce platform development and vice versa. 
  • When Salesforce comes with the LWC, it uses less framework and more general language models. 
  • JavaScript also updates and adds some models used in most of the framework. 
  • LWC is an important step for Salesforce to make it easier and more accessible to other developers. 
  • Aura is also a type of isolation in terms of communication in between different frameworks. 
  • At that time when LWC was introduced, it fulfils the need for standardization of the web. 
  • Over the last 8 years, various standards were developed in web development like ECMAScript 7, Templates, Slots and Custom Elements. Many features like this become standard in core JavaScript. 

Advantages for Developers: LWC

  • Learn the standard once, and use it everywhere. 
  • Aura contains multiple JS and HTML files and it's hard to handle them all while in LWC there is a single file for JS, CSS and HTML for each component. 
  • No more work on the developer console. You can now work on VS code for Salesforce development which also gives you access to a lot of helpful extensions. 
  • Non-Salesforce developers can also easily build components. 
  • Faster Development. 
  • Better Performance. 
  • Can communicate with existing aura components. 
  • More developers and the community can help Salesforce developers since Salesforce development is now nearer to another framework. 

web stack 2014 vs web stack 2019

dont miss out iconCheck out an amazing Salesforce video tutorial here: What is Lightning Web Components (LWC) in Salesforce?

Web Stack 2014 vs Web Stack 2019

  • Using web stack 2014 was more framework specific as many of the things are dependent on the framework feels like the framework itself is a whole different language. 
  • In web stack 2019 many of the things were transferred to JavaScript itself and make the new standard was generalized for most of the frameworks. 
  • In web stack 2019 web components, Templates, Custom Elements, and Shadows DOM modules get transferred from framework to web standards and get included in JavaScript itself. 
  • It makes components run faster and easy for developers to develop in the LWC framework even if they don’t know much about it. 
  • The Aura programming model follows the web stack 2014 while LWC follows the web stack 2019.                                      

Aura and LWC Can Co-exist

  • The good thing about LWC is that it can also use your older Aura component, you don’t have to worry about converting all of them into LWC. 
  • They share the same Lightning Data Service, User interface and API service. 


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