# D2 > D2 builds custom operations platforms tailored to how your business actually works — with full ownership, AI automation, and delivery in around 90 days. D2 is a Toronto-based product engineering studio that designs and ships internal platforms replacing spreadsheets, fragmented SaaS, and manual workflows. Each system is built around a client's real operations and delivered with full code, IP, and infrastructure ownership. ## Pages - [Home](/): Overview of D2's custom operations platform offering, benefits, use cases, and process. - [About](/about): The team behind D2, the founder's story, and the studio's approach. ## Case studies - [Ledger — AI accounting platform](/case/ledger): How a Canadian accounting firm scaled without hiring using a custom AI-powered ledger system. - [Mortgage — AI decisioning](/case/mortgage): AI mortgage processing platform that automated document analysis and bank eligibility matching. - [Tech Embassy — Event operations](/case/tech-embassy): Custom event operations platform for multi-location coordination and participant management. ## Optional - [Privacy Policy](/privacy) - [Terms of Use](/terms)