Tarun Upadhyay.

Writing / Subject

Operational software

Enterprise systems, exception-heavy workflows, integrations and the handoffs between them.

  • The first question in any outage: whose system is it?

    Most production failures in integrated systems aren't yours or theirs. They're the handoff between the two, and that's exactly where nobody looks first.

    Dec 8, 2025 · Operating Notes

  • Build versus buy is really a question about who owns the interface

    The standard framing — compare the cost of building to the cost of buying — misses the question that actually decides it: does the vendor's product expose the interface you need, or just the outcome?

    Nov 17, 2025 · Operating Notes

  • How enterprise buyers evaluate operational risk

    Founders assume buyers are evaluating the product. They're also evaluating what happens when it fails. Why an inferior incumbent keeps winning, and how to sell controlled change instead of pure improvement.

    Oct 27, 2025 · Operating Notes

  • When services are a wedge — and when they become a trap

    Services can be the only credible way into a complex industry, or the thing that caps your margins forever. The distinction isn't whether humans are involved. It's whether their effort compounds.

    Oct 20, 2025 · Operating Notes

  • Why enterprise software fails at exception handling

    Enterprise software is designed around states. Real operations happen between them. Why systems fail at the moment users most need help — and the four capabilities good exception handling requires.

    Oct 13, 2025 · Operating Notes

  • Building when one customer dominates the business

    Concentration isn't the real risk — failing to convert a dominant customer into reusable product is. The metric that matters isn't percentage of revenue. It's percentage of the business that could transfer to another customer.

    Sep 22, 2025 · Operating Notes

  • Company-Building Under Real Constraints

    A seven-part series on building operational software companies — customer concentration, automation, exception handling, services, enterprise risk, and what exits do and don't teach. Written from the operator's chair, not the slide deck.

    Sep 15, 2025 · Operating Notes

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