The Prodinja Blog
Deep-dive frameworks, honest analysis, and actionable playbooks for product managers navigating AI, stakeholders, and strategic ambiguity.
Mapping the Job: Ulwick's Eight Universal Steps of Getting Anything Done
Every functional job follows the same eight steps; map them and you'll spot opportunities competitors never see.
The Real Unit Economics of Multimodal: Why a Second of Audio Isn't a Token
Text, audio, and image inputs price on completely different meters — model your margins per modality before you promise 'unlimited voice.'
Every Guardrail Costs Latency: Managing the Safety/Speed Tradeoff
Each safety check you add slows the response — here's how to sequence guardrails so you stay safe without making users wait.
Writing a Technical Spec Engineers Respect: Precision Without Pretending to Be an Architect
The line between specifying the problem and dictating the solution - and how to write requirements engineers want to build.
PII, GDPR, and the Right to Be Forgotten: The Technical Reality Behind Privacy Promises
Deleting a user is harder than a DELETE query - understand the technical debt hiding inside your privacy commitments.
Correlation vs Causation: The Metric Relationship That Costs Roadmaps Millions
'Users of feature X retain better' has launched a hundred wrong roadmaps; learn to tell selection from cause.
The 90-Day PM Onboarding Program That Actually Ramps People
Stop letting new PMs flounder for a quarter — a structured ramp that gets them to real decisions faster.
Beyond Uptime: The Platform Metrics That Actually Predict Adoption
Uptime and request counts are hygiene, not health; the metrics that matter track whether teams choose you and succeed once they do.
Versioning Strategy for Platform PMs: The Backward-Compatibility Contract
Every breaking change is a broken promise to teams who trusted your contract; a versioning strategy is really a trust-management strategy.
Data Contracts: The Interface Between Producers and Consumers
Upstream teams break your pipelines because nobody agreed on the interface—learn to design data contracts like API contracts.
Performance and Battery Budgets: The Non-Functional Requirements Mobile PMs Must Own
Cold-start time, jank, and battery drain are product decisions, not just eng concerns, so put budgets in the spec.
FinOps for PMs: Making Cloud Cost a First-Class Product Metric
Unit cost per request is a product metric - here's how infra PMs make efficiency a roadmap driver, not an afterthought.
Usage-Based Insurance Product Strategy: Turning Telematics Data Into a Fair, Trusted Price
UBI promises fairer pricing from real behavior, but only if customers trust the tracking and understand the score; here is the product playbook.
Migrating Off Legacy BSS Without Melting the Business
Ripping out a 15-year-old billing stack is a career-defining migration; here's how PMs sequence it so revenue never stops.
Internal Promotion vs. Switching Companies: The Real Math
Staying can compound trust and context; leaving can reset your comp and level, and the right call depends on the math.
The Meeting Audit: Which Calls Are Worth Everyone's Overlap Hours?
Not everything can be async; here's a decision rule for which conversations genuinely deserve your team's scarce synchronous time.
Label Without Labelers: Weak Supervision When You Can't Afford Ground Truth
Before you hire annotators, ask whether a handful of noisy rules can label a million examples well enough to start.
The First PM at a Startup: The Complete Survival Guide
The definitive guide to startup pm for product managers.
Running a JTBD Workshop That Doesn't Devolve Into a Feature Wishlist
Get engineers, design, and sales to agree on the job in a half day, without the session collapsing into feature debates.
Wireframe or Write? A Decision Rule for When a PM Should Sketch
Not every idea needs a wireframe — here's a fast decision rule for when structure beats prose and when a sentence is enough.
The Model You Built On Will Be Retired: Planning for Version Churn
Your carefully-tuned prompts are pinned to a model that has an expiry date — plan for the migration you didn't ask for.
As-Is vs To-Be: Why Skipping the Ugly Current-State Map Costs You Later
The messy as-is map you'd rather skip is exactly where the automation risks and hidden exceptions are hiding.
Enterprise vs PLG Pricing for AI: Two Cost Curves, Two Playbooks
PLG needs predictable self-serve pricing; enterprise can absorb consumption and custom terms. Why one AI price rarely fits both.
Writing Annotation Guidelines That Don't Fall Apart at Scale
Ambiguous labeling instructions quietly wreck your dataset; here's how to write rubrics annotators can't misread.