Hello @Lincy Thomson 

Please go through this link - Processes 

You will easily understand the what and why we use processes in Outsystems.

In simple words - Processes in Outsystems help automate and streamline complex workflows, making application more efficient and reducing manual work.

Hope you will understand this.

Regards

Prince

Hi @Lincy Thomson, 

Below Links might help you understand better.

https://success.outsystems.com/documentation/11/building_apps/using_processes_bpt/

https://learn.outsystems.com/training/journeys/business-processes-589

https://learn.outsystems.com/training/journeys/async-capabilities-649

Thanks,
Vignesh Prakash.

Hi,

A Process is an element that allows you to integrate your business processes into your applications. A process is designed in a process flow, which usually represents the activities that have to be carried out during an entity life cycle. 
To get the better understanding you can go through the below links as well as all other links provided by Vignesh Prakash in this thread.

https://success.outsystems.com/documentation/11/building_apps/using_processes_bpt/create_a_process_flow/process_flow_toolbox/

https://success.outsystems.com/documentation/11/building_apps/using_processes_bpt/

When defining the process flow of your processes, Service Studio provides the following Tools: 

Processes are a means of managing workflows. For example, consider a leave application process where an associate applies for leave. Once the leave is applied, various steps are involved. If the leave request exceeds a certain threshold or the available leave balance, it will be automatically rejected. If the initial validation is successful, the request will be sent to the reporting manager for approval. Depending on the rules, it may require additional approvals. At different stages, there may be requirements for auditing, sending notifications, and other activities. All of these tasks can be efficiently and effectively managed in OutSystems.

I recommend completing the "Building Your First Business Process" course to gain a thorough understanding of Business Process Technology (BPT).  Also go through the links shared by @Vignesh Prakash and @Princi

Hi Lincy Thomson 

In Outsystems , asynchronous logic can be performed by means of process and timer.Process allows to integrate the business process in an application by 
allowing machine to machine and human to machine interaction triggered by database event.
It's an asynchronous logic that executes in the backend. There are several process elements
to achieve the required functionality say Human activity, Automatic activity, Decision activity
etc. Launch On property of the process launches a process instance and Close On property ends the activity. 

Click here to see more about Process