In this summary, we discussed how to receive notifications for LinkedIn job postings using RapidAPI and Twilio. We covered the prerequisites, project setup, and configuration of the RapidAPI service interface. We also implemented the RapidAPIService, MessageService, and TwilioService interfaces. The application uses a CommandLineRunner to make a request to the LinkedIn jobs search API, filter the latest jobs by date, and send the filtered jobs using Twilio Sandbox for WhatsApp.