1. Advertisement: The Traditional Era Definition: An explicit, formal communication used to promote products, services, or brands. Mediums: Print (newspapers, magazines), TV, radio, and billboards. Features:One-way communication.Focused on brand promotion and product awareness.Broad and generalized audience targeting. Challenges: Limited personalization, hard-to-measure effectiveness, and expensive to execute on mass scales. 2. AD: The Digital and Modern Era Definition: Short for "advertising," but now often refers to digital, concise, and data-driven marketing content tailored for online platforms. Mediums: Social media, search engines, apps, streaming platforms, and influencer collaborations. Key Characteristics:Short-form: ADs are often concise, capturing attention within seconds (e.g., skippable YouTube ads or Instagram stories).Personalized: Leveraging data to serve ads relevant to user behavior, preferences, and demographics.Interactive: Incorporating engagement features (polls, swipe-ups, gamified elements).Measurable: Detailed analytics (click-through rates, impressions, conversions). Focus: Delivering specific, value-driven messages to hyper-targeted audiences. Differences