How to optimize data visualization for enterprise projects

Hi all! I’ve been working on a data visualization project for a large enterprise, and we need to integrate several data sources into a unified system. The issue we’re facing is the complexity of visualizing data relationships across multiple systems while maintaining performance and usability. We’ve tried a few tools, but they either lack customization or are too resource-heavy. Has anyone used a robust solution that can handle large-scale data visualization and offer flexibility in graph layout? I’m looking for something scalable that won’t break the budget.