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Summary from the TLDR Design newsletter

Two massive A-brands, both with legacy design systems in place with over 150 touchpoints including web, app, and TV, and over 7 million users. The challenge was to merge these two brands into one design system with zero actual customers to test on. Here’s what challenges the merger of T-Mobile and Tele2 into Odido presented to their design teams and a look at how the design systems were merged.