The most notable difference when looking at Lightning Experience is the upgraded user interface. For example, the home page in Salesforce Classic is very different from the landing page in Lightning Experience, and it highlights the visual improvements that have been implemented.
The user interface in Lightning Experience offers a modern set of fonts and colors, and the screens are rendered in a more fluid and dynamic way, as shown in the following screenshot:
Salesforce periodically publishes a feature comparison between Classic and Lightning Experience, which can be found at the following web link: https://help.salesforce.com/articleView?id=lex_aloha_comparison.htm&type=5.
At the core of the Lightning Experience upgrade is the ability to add modular functionality to pages by allowing Lightning components to...