What devices should you target?

One of the first questions historically asked when developing a web-based application is What desktop browsers and versions shall we support? These days, you should not be thinking so much about the software installed on the laptops and desktops of your users, but rather the devices they own.

The answer might still include a laptop or desktop, though it is no longer a safe assumption that these are the main devices your users use to interact with your application. They could be mobile phones, tablets, watches, voice recognition devices such as Alexa, or, depending on your target market, larger devices, such as cars or vending machines! So, make sure that you think big and understand all the types of devices your customers and their customers might use to interact with your application.

For desktop and laptop users interacting with your Lightning application, delivering a UI is a combination of using the standard Salesforce UI and any...