What is Business process flow in Microsoft Dynamics CRM

Microsoft has introduced a new feature in MS CRM 2015 i.e Business Process flow which is very useful when the requirement is based on any process flow, I am trying to what exactly business process flow and how it works in MS CRM-

Every business has some predefined business process workflows that they follow
in day-to-day business. Let's take a very common scenario of the loan approval process.
Let's assume you are a technical consultant in finance based company and wanted to implement Loan Origination system in MS CRM.

When customer apply for loan. As soon as customer apply for loan, it will
initiate a loan origination process approval behind the scenes, which may contain different stages and
sub approval of your different business owners and respective departments. Like in first stage the loan application goes to get verified with the customer address details and banking history, then it will go though the documents verification process, after document verification process is completed application will go to credit manager for the approval, in some cases this approval can be a two stage., then it will go for singing the agreement and finally the loan application will go to the disbursement team.

We can implement similar business requirements in Microsoft Dynamics CRM 2015
using the business process flow. The business process flow was introduced in CRM
2011 Polaris release initially and enhanced in Microsoft Dynamics CRM 2015. Business
process flow is basically a guided approach to complete any business process, which
may have different stages based on business requirements. Microsoft Dynamics CRM
2015 provides a rich editor to design for designing business process flow.

You can create a business process flow by navigating to Settings --> Process --> New and selecting
Business Process Flow under the Category drop-down menu.

We can have up to 30 stages and 30 steps per business process flow.

We can include multiple entities in the same business process flow and take the process flow from one entity to another entity. We can include up to five maximum entities in the business process flow. The following is the screenshot of the out-of-the-box Lead to Opportunity Sales Process business process flow:

Microsoft Dynamics CRM 2015 added support for branching logic, which allows us to switching the process stage using if conditions, the logical AND and OR operator support, which allows us to group multiple conditions and support for interacting with the business process flow using client-side scripting for developers.