
Explanation:
Box 1: Azure WebJobs
Compare Functions and WebJobs
Like Azure Functions, Azure App Service WebJobs with the WebJobs SDK is a code-first integration service that is designed for developers.
Comparison table
Azure Functions is built on the WebJobs SDK, so it shares many of the same event triggers and connections to other Azure services. Here are some factors to consider when you're choosing between Azure Functions and WebJobs with the WebJobs SDK:

Box 2: HTTP
Note: Choose the right integration and automation services in Azure
Compare the following Microsoft cloud services:
Microsoft Power Automate (was Microsoft Flow)
Azure Logic Apps
Azure Functions
Azure App Service WebJobs
All of these services can solve integration problems and automate business processes. They can all define input, actions, conditions, and output. You can run each of them on a schedule or trigger. Each service has unique advantages.
Outgoing Webhooks
Webhooks help Teams to integrate with external apps. With Outgoing Webhooks, you can send text messages from a channel to a web service. After configuring the Outgoing Webhooks, users can @mention Outgoing Webhook and send a message to a web service. The service responds within 10 seconds to the message with a text or a card.
Reference:
https://learn.microsoft.com/en-us/azure/azure-functions/functions-compare-logic-apps-ms-flow- webjobs