Career Path to a Big Tech PM

I'm currently working as an Associate Product Manager at a Series C B2B startup. I have 2+ years of work experience.

I'm writing this post to seek advice from the fellow grapeviners here. I intend to learn more about the PM domain and eventually transition to a Big Tech like Google, Microsoft or Salesforce in the long term.

I am looking to make a switch and wanted to make sure that my next career move aligns with my longer term goals. Would highly appreciate any suggestions on what would it take in terms of learning, work experience in order to land at a Big Tech in the long run.