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Customer Development (CustDev or “castdev”) is an approach to product development that focuses on testing business hypotheses through direct communication with potential customers.

UTM tags are special parameters that are added to a regular sitelink after a question mark.

Trust is a set of signals that show search engines and users how trustworthy a particular site is.

A proper checklist does not describe general principles or strategy, but provides specific steps, completion criteria, and, if necessary, responsibility for implementation.

Google Calendar is more than just a list of appointments. It’s a platform that combines events, tasks, notifications, meeting pages, and teamwork tools.