What is Lead in salesforce or What is Lead Object in salesforce?
When a lead is created in Sales force CRM, information about the interested person is stored in the lead object. In addition to moving lead information to the contact object, the app creates two additional objects: an account object and an opportunity object.
The account object holds all the information about your customer in essence, it becomes the central object.
The opportunity object becomes part of the sales pipeline, which makes it possible to track the deal as it moves through the pipeline.
Reps can attach additional contacts and opportunities to accounts or additional contacts to opportunities.
Example :- ABC Company ( account) may be associated with several employees at ABC Company (contacts) as well deals in progress for different products (opportunities).