App development is the process of creating software applications that run on a device—typically mobile devices like smartphones and tablets, or platforms like computers and smart TVs. There are two major types of app development: 1. Mobile App Development Platforms: Android (using Java/Kotlin), iOS (using Swift/Objective-C) Tools: Android Studio, Xcode, Flutter, React Native Examples: WhatsApp, Instagram, Uber 2. Web App Development Runs on: Web browsers Languages: HTML, CSS, JavaScript (with frameworks like React, Angular, or Vue.js) Backend: PHP, Node.js, Python, etc. Examples: Gmail, Facebook, Trello Key Steps in App Development: Planning – Understanding the idea and purpose of the app Designing – Creating the UI/UX using wireframes and mockups Development – Writing the actual code (frontend and backend) Testing – Fixing bugs and ensuring smooth functionality Deployment – Publishing to platforms like the App Store or Google Play Maintenance – Updating and improving the app over time

🔹 Web Design Web design is about how a website looks and feels. It involves: Layout – Structuring content and elements on the page. Color scheme – Choosing colors that match the brand or purpose. Typography – Selecting fonts and text styles. Graphics & Images – Using visuals to enhance user experience. User Interface (UI) – Designing buttons, menus, icons, etc. Responsiveness – Making sure the site looks good on mobile, tablet, and desktop. Tools used: Figma, Adobe XD, Sketch, Canva, Photoshop 🔹 Web Development Web development focuses on how a website functions. It’s divided into: Frontend Development (client-side) Makes the design interactive. Technologies: HTML, CSS, JavaScript, React, Vue, etc. Backend Development (server-side) Handles data storage, user login, server logic, etc. Technologies: PHP, Python, Node.js, databases (MySQL, MongoDB) Full Stack Development Combines both frontend and backend skills. Tools used: VS Code, GitHub, WordPress, Laravel, Django, etc. 🔹 In Simple Terms Web design = Looks and layout Web development = Logic and functionality

🔍 What is Google? Google LLC is an American multinational technology company specializing in Internet-related services and products. It's best known for its search engine, but it has grown to include a wide range of technologies and services. 🏢 Founding Details Founded: September 4, 1998 Founders: Larry Page and Sergey Brin Headquarters: Mountain View, California, USA Parent Company: Alphabet Inc. (since 2015) 🌐 Core Services 1. Search Engine World's most widely used search engine. Handles over 8.5 billion searches per day. 2. Advertising Google Ads (AdWords): Helps businesses advertise. AdSense: Allows website owners to earn money by showing ads. 3. Mobile OS Android OS: Most popular mobile operating system globally. 4. Cloud Services Google Cloud Platform (GCP): Cloud computing, AI, and machine learning services for businesses. Includes Google Drive, Docs, Sheets, Slides, etc. 5. Communication & Productivity Gmail: Popular free email service. Google Meet, Google Chat, Google Calendar. Google Workspace (formerly G Suite): Paid productivity suite for businesses. 6. Web & App Tools YouTube: Acquired in 2006, world’s largest video platform. Google Maps & Google Earth. Google Chrome: Leading web browser. Google Translate: Free multilingual translation service. Google Photos: Cloud photo storage. 🧠 AI & Research Owns DeepMind (AI research lab). Launched Gemini (ChatGPT competitor) and AI models like PaLM, Bard, and Gemini 1.5. Leader in quantum computing and machine learning research. 📱 Devices Pixel phones Pixel Buds (earbuds) Pixel Tablet Google Nest (smart home products: speakers, displays, thermostats, security). 💼 Business Model Main revenue from advertising (~80% of revenue). Also earns from: Cloud services Hardware App sales from the Google Play Store 🔒 Controversies & Criticism Privacy concerns (data collection and usage). Antitrust lawsuits (monopoly on ads/search). Censorship and content regulation debates. Employee protests over ethical issues in AI and military contracts. 🌍 Global Reach Google operates in over 100 countries. Services available in more than 150 languages. Billions of active users every day.