Jigsaw test page
Thinglink
'Thinglink' embed is the best option for interactive images - it costs $240 a year to remove branding and share buttons but allow for direct linking with hover over actions.
Try hovering over the 'Entrepreneurial Approach' - you will see some text and an active link which will link to the WCC homepage.
Genial.ly
Like ThingLink we'd have to pay €20 a month to remove the branding. But this will allow us to create a really great interactive image.
Google drawing embedded into a Google Site
This option is free but there is no customisable hoover text or active hotspot to show a viable link. There is certainly more work required to edit and amend.
'Entrepreneurial Approach' is the only link I have added (it simply goes through to the WCC homepage)