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Estimation of tasks in <a href="https://hackernoon.com/tagged/product-development" target="_blank">product development</a> process strongly biased as it’s done in different perspective, business perspective judge based on the effort of execution, communication within the company or customers ,… while estimation of technical team are connected to required efforts of building something, if you are a product manager you need to help your team to come up with an estimation that is feasible for them and viable for your company business. You need to manage these two expectations in your organization to come up with a working estimate as a whole.