What Is Salesforce?

Salesforce is a company that rents out a piece of a giant, shared computer system where your organization stores its data (customers, orders, cases, whatever your business runs on) and builds the screens and automation around it — without your company owning or running any servers.

That's it. Everything else — Apex, Lightning Web Components, Flow, reports — is a tool for working with data that lives in that shared system.

Think of Salesforce like renting a unit in a serviced office building instead of constructing your own office tower.

• The building (Salesforce's infrastructure) is shared by thousands of companies, but your unit's contents are completely private to you.
• The building management (Salesforce) handles security, power, the elevators, fire safety — the stuff that's expensive and boring to run yourself.
• You decide how your unit is laid out: what furniture (custom objects), what signage (page layouts), and what processes your staff follow (automation).

Later lessons spend a lot of time on governor limits — think of those as the building's shared-resource rules (like "don't run the elevator for 10 minutes straight, other tenants need it too"). They exist because the building is shared.

1. Data — stored in objects (think: database tables). Account, Contact, and Opportunity are standard objects Salesforce gives every org; you can also create your own custom objects for anything specific to your business (a Loan_Application__c, a Support_Ticket__c).
2. Automation — rules that react to data changing. Some of this is declarative (point-and-click, like Flow), and some of it is programmatic — written in Apex, which is what this entire course is about.
3. User interface — the screens people actually use: Lightning pages, list views, and (increasingly) Lightning Web Components that Apex often powers behind the scenes.

Every lesson from here on is really just going deeper into one of these three things.