I am having 8 years of exp in IT industry web technologies and now I want to switch in to product based companies is there I need to take online courses which is charging 1.5 and 3 lakhs to learn D...

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I am having 8 years of exp in IT industry web technologies and now I want to switch in to product based companies is there I need to take online courses which is charging 1.5 and 3 lakhs to learn DSA, System design.
Please, suggest me.

Suggestion on Future