I don't know if I can explain the phrase either, but rather the best explanations are examples. In other words, it is a lot of marketing speil which says very little, IMO, i.e. B/S. All companies will say the same thing.

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con la mayor velocidad de retorno (de inversión) en el sector. A bote pronto.

https://en.wikipedia.org/wiki/Time_to_value
Time to value (TTV) is similar to return on investment (ROI), but instead of realizing the financial success of an investment, it implies achieving the effectiveness of an investment... The time to value (TTV) measures the length of time necessary to finish a project and realize the benefits of the solution. The concept is used to help decision makers evaluate the proposed benefit of an investment in time and/or money

Sobre velocidad de retorno:
https://www.google.es/search?q="velocidad de retorno" invers...
saludos