How to interpret the graphic by HubSpot below

Along the top are the four actions (Attract, Convert, Close, Delight) inbound companies must take in order to obtain visitors, leads, customers, and promoters. Along the bottom are the tools companies use to accomplish these actions. (Note the tools are listed under the action where they first come into play, but that’s not the only place they’re applicable! Several tools, like email, can be essential in several stages of the methodology.)