What is Flow Builder ?
Lightning Flow is the product inside salesforce to automate complex business processes.
Lightning Flow provides two tools Process Builder and Flow Builder.
Process Buidler is used to create processes.
Flow Buidler is used to create Flows.
When to use Flows?
If you want to automate a guided visual experience.
If you want to build more complex functionality as comapared to process buidler.
If your team does not have enough developers, flows could be alternative to write an apex code. Time and efforts to write a flow is much lesser than apex code.
Advantages of Flows
Flow builder provides a visual debugging interface whic makes troubleshooting smoother.
If you are delivering for a client team, flows are easier to maintain by providing an interface for admins to make changes easier in longer term.
If your team does not have enough developers, flows could be alternative to write an apex code. Time and efforts to write a flow is much lesser than apex code.
Flows interviews automatically bulkify the actions.
Flow Elements:
User Interface:
Screen Elements
Action
Subflows
Logic Elements:
Assignment
Decision
Loop
Pause
Data Elements:
Create Records
Update Records
Get Records
Delete Records
Resources in Flow Buidler
Variables
Constants
Formula
Text Template
Choice
Record Choice Sets
Picklist Choice sets
Stage
Lets look in to below video to actually go into flow builder and explore these things:
Let me know incase of any doubts or questions in comments section of video.