Explore a conference talk from Code BEAM America 2024 that delves into innovative XML parsing optimization techniques in Elixir. Learn about a groundbreaking project that achieved a 10x performance improvement for handling large XML payloads through selective parsing methods. Discover how the team developed a specialized approach that only processes predetermined data elements, resulting in enhanced security and performance benefits. Follow along as the speaker extends these parsing concepts to JSON processing, demonstrating interesting applications and outcomes. The 40-minute presentation provides practical insights into efficient data parsing strategies while highlighting the continued relevance of XML in modern development environments.