Magento 2 reindex is to notify bots of the search engines about your new or updated information on your website, and that is the way you can rest assured that your online visitors will always see the latest updates on your website. It is imperative, really!! Magento 2 is indeed favored mainly for its complicated architecture, and it carries a lot of merchant’s data, and this makes your website fails to check the newest updates. Merchant’s data, like user details, product prices, sales price, coupons and catalog information, are distributed in many database tables. To optimize the look at the frontend, an indexer plays a vital role as it helps to store essential information within individual tables.

How to Reindex in Magento 2 from Command Line and Backend