Salesforce in a nutshell

Salesforce is a cloud-based, complete integrated solution for managing all interactions with your customers and prospects, designed to help your organization grow and succeed.
Salesforce works by method of objects and integrating means you need to connect with these objects. There are many objects – some are standard and some custom. for example: Accounts, Case, Activity, Document, etc.

Salesforce form builders

Online form builders are very frequently integrated with salesforce (Salesforce form builder) since they enable you to create any type of form you want and integrate it with your salesforce account. You can find many examples of how online forms can be combined with Salesforce. The most common uses are:
1- Web-to-Lead.
a way to automatically generate up to 500 leads per day with the prospecting data from your company’s website

2- web-to-case
a way to gather customer support requests directly from your company’s website and automatically generate up to 5,000 new cases a day with Web-to-Case

Read more on Salesforce Integrated Forms