There are a bunch of online services, and it’s hard to figure out who’s doing a good job unless you’re an expert.  This list only has services most people need.  There are lots of other secure solutions for each of these categories; this list only includes those I already know to be good.  

Note: I am not compensated by anyone, in any way, for any item on this list: it comes only from my own professional analysis.  Weird, I know.

Recommended Online Services

Office, email

Google G Suite

Microsoft Office 365

Online marketplace/Distribution

Amazon

Etsy

Wayfair

Website

Weebly

Wix

Squarespace

Hosting

Amazon AWS

Microsoft Azure

Google Cloud

Payments

Square

Stripe

Paypal

Transferwise

HR

Trinet

Justworks

CRM

Hubspot

SalesForce

Accounting

Xero

Quickbooks

Freshbooks

Manufacturing/ERP

Bitrix24

Sage