An iframe (inline frame) is an HTML element that allows you to embed another webpage within your current webpage. Think of it as a "window" displaying content from an external source while keeping it separate from your main page's code and styling.

Common uses of iframes include:

• Embedding videos from platforms like YouTube or Vimeo
• Displaying interactive maps from Google Maps
• Showing social media feeds or widgets
• Integrating payment forms from secure providers
• Loading third-party advertisements

Key characteristics of iframes:

• They create a separate browsing context - the embedded page operates independently
• You can control dimensions with width and height attributes
• Modern iframes often use the sandbox attribute for security
• Content can be loaded from different domains (cross-origin)

Important considerations: While iframes are powerful, they can affect page loading speed and SEO if overused. Always ensure embedded content comes from trusted sources and implement proper security measures. For hosting customers, iframes are particularly useful when you need to display external content without complex integration.