Just wanted to clarify, by Tech - I mean for example, a startup may use React, or Vue.js and a chat tool like Intercom. E-Com websites use shopify or magento or even WooCommerce. Big Enterprises also use Drift or Zendesk while people who sell infoproducts use Clickbank, Podia or Systeme.io for example. I can also target websites for people who make money with affiliation who use clickbank or CJ affiliate. Also, are you looking for lawyers, they could use a wordpress theme or modern marketplace builders use Sharetribe.
Also maybe a marketer? Maybe they use marketing tools like an emailing tool (MailChimp, AWeber... etc), social proof widgets like UseFOMO or UseProof, a popup tool like OptinMonster? Analytics? Hotjar for example