What does "MarTech Stack" mean?

MarTech Stack:

The MarTech Stack is a term used to describe the set of tools used to manage the marketing efforts of a group. Such a set of marketing tools might consist of a CRM, a Mailchimp email marketing campaign, social media management, a WordPress blog, a Youtube Channel, a website with landing pages, and Google Analytics to help make sense of it all. All such tools need to be integrated and coordinated. The larger the company, the bigger (and more cumbersome) their MarTech Stack might be. Also called "Marketing Stack." It is a buzzword.

 Klint: Examples of MarTech Stacks