1️⃣ What is Web API? 🔹 Definition: A Web API (Web Application Programming Interface) is a set of HTTP endpoints exposed by a server application that allows other applications (frontend, mobile, etc.) to communicate over the web . In .NET Core, a Web API is a type of controller that returns data (usually JSON), not views (HTML). 2️⃣ Why Use Web API? Purpose Description 🔄 Communication Enables frontend and backend apps to communicate using HTTP ⚙️ Reusability Backend APIs can be used by web apps, mobile apps, desktop apps 🔐 Centralized Business Logic All logic is managed on the server side 🚀 Lightweight & Fast Returns raw data (JSON), which is faster than rendering views 3️⃣ Web API vs MVC Feature MVC Web API Output Returns Views (HTML) Returns Data (JSON/XML) Use Case Web applications (UI required) APIs for mobile, SPA, external systems Controller Type Controller ApiController Return Type IActionResult with View ActionResult<T> with data 4️⃣ Architecture of...

  ✅ What is Jenkins? (Simple Explanation for Students) 🔧 Jenkins is a free tool used by developers to automate tasks like: Building code Testing code Deploying applications 💡 Think of Jenkins as a Robot Assistant : Whenever you write code and push it to GitHub, Jenkins can: Automatically test if the code works Automatically build the app Automatically deploy it to a server 🔁 This process is called CI/CD : CI – Continuous Integration (build + test automatically) CD – Continuous Deployment (deploy automatically) 🚀 Jenkins Installation: Key Steps and Important Options 🔷 Windows Installation Steps: Install Java First (JDK) Jenkins needs Java to run. Download JDK from Oracle or OpenJDK Set JAVA_HOME environment variable Add Java to system PATH Download Jenkins Go to https://www.jenkins.io Download the Jenkins Windows Installer (.msi) Run Installer Double-click and follow steps It will install Jenkins as a ...