Question: Is there a tool that allows me to build and own custom audiences using my own offline data and identity graphs?

If you want a system to build and control custom audiences using your own offline data and identity graphs, Dstillery is a good choice. The company's ID-less technology to gather browsing behavior data and predict user behavior offers a range of custom audience options, including Awareness, Consideration and Direct Response, to fine tune ad campaigns with AI targeting smarts.

Another powerful option is Optable, an end-to-end data clean room platform for privacy-centric advertising. It includes identity management, data collaboration and activation tools to handle audience data in the post-cookie era. With a DMP, privacy sandbox and cross-cloud interoperability, Optable lets you build purpose-limited data clean room apps and work with partners.

Audience is another powerful option designed to capture, enrich and activate zero-party data. It can be used for interactive campaigns to convert customers and for media companies to expand and monetize their owned databases. It includes tools for campaign creation, end-to-end attribution, data enrichment and promotion, which can help increase audience engagement and revenue.

If you want to target your best customers with more precision, DrivenIQ has a custom micro-audience data platform. It can identify and target customers on multiple devices to avoid wasteful advertising and boost sales through audience personas and profiles. The company's suite of audience intelligence and development tools, including ResolveID and VisitIQ, can help businesses improve ROI and better target customers.