They sell ...........many / much................ products online
Many
Companies spend ...........a lot of / many .................money on E-commerce security.
a lot of
...........A lot of / Much ............shops have online presence.
A lot of
............Some / A little .........companies offer customer service and advice on their E-commerce websites.
Some
Even when companies only have........... a little/a few ...................money for online marketing, they should spend it.
a little
I don't have ...........much / many ........knowledge of computers, but I can still shop online.
Much