Account-based marketing (ABM) personalization is a strategy where digital marketers and sales teams collaborate to tailor experiences based on specific customer needs to drive conversions and sales, but it often faces several challenges that hinder its implementation. These barriers include using outdated technology stacks that are not conducive to personalization, poor coordination between marketing and sales teams due to siloed operations, fragmented customer data that prevents a unified view of customer journeys, reliance on inaccurate third-party data instead of first-party data, and uncertainty about how to initiate personalization efforts. Overcoming these obstacles requires adopting modern MACH technology architectures, fostering interdepartmental collaboration, investing in integrated customer data platforms, prioritizing first-party data collection, and starting small with personalization tools to learn and adapt. Contentful is highlighted as a platform offering tools to support ABM personalization by enhancing data management and providing AI-powered testing capabilities, helping businesses create personalized and engaging customer experiences.