Define the value before combining products
I would use the phrase product synergy only when the combination creates a meaningful customer or business benefit that the products could not create as effectively on their own. Shared branding or a larger bundle is not enough. I would start with the customer problem, the job to be done, and the evidence that a connected experience matters.
I would ask whether customers experience the products as part of one workflow, whether the integration removes real effort, and whether the business can support the combined promise reliably.
Look for real connection points
I would map the journey and identify useful connections: shared identity, data that customers should not have to enter twice, a workflow that naturally continues across products, or a capability that improves the quality of another service. I would also examine the costs, including privacy, security, reliability, migration, support, and the risk of making a simple product harder to understand.
I would avoid forcing integration simply because two teams share a portfolio. Product boundaries can protect focus and give customers choice. The right decision may be a clear handoff, a lightweight interoperability layer, or no connection at all.
Test the combined proposition
I would define the customer outcome and guardrails, then test a narrow connection with the people most likely to benefit. I would look for adoption, successful task completion, retention or repeat use where relevant, support themes, and evidence of unintended friction. I would compare the result with the separate experiences rather than claiming synergy from activity alone.
My bottom line
I treat product synergy as an evidence-based customer promise, not an excuse to bundle features. The Product HQ product manager certification supports the strategy and prioritization behind this work, and the Product HQ newsletter shares practical product lessons.