E-commerce, e-branding, digital signatures, and mobile commerce are recent trends in business systems and advertising in India. E-commerce involves buying and selling of goods and services online and has advantages like faster transactions and a larger market reach. E-branding helps companies build loyalty by creating an online brand identity. Digital signatures verify message authenticity and integrity during encryption and decryption. M-commerce allows buying and selling through mobile devices, saving time and costs while expanding a business's coverage area. Recent advertising trends include utilizing emails, social media, banners, blogs, and mobile platforms to reach wider audiences.