DMI Expert study materials
DMI Expert study resources

DMI Expert case studies

DMI Expert · Put your knowledge to work in context.

DMI Expert is the advanced-tier credential in the Digital Marketing Institute catalogue, listed on the DMI site as the Expert Diploma In Digital Marketing / DMI + AMA Certified Digital Marketing Expert. DMI positions it for marketing professionals looking to drive business growth and commercial success in a senior role, which places it above the Pro and Specialist diplomas and alongside the Postgraduate Diploma and MSc options. The DMI Expert case studies are 5 cases and about 4,267 words.

1

Ridgeline Outdoors: last-click ROAS versus a geo holdout

Ridgeline Outdoors is a €180M direct-to-consumer outdoor equipment brand selling in six European markets. Its €7.2M annual media budget sits with three teams reporting to different directors: paid search €3.4M, paid social €2.1M, and the remainder in affiliate and retail media.

968 words, about 5 min
2

Harrow & Vane: organic collapse, brand bidding and Performance Max

Harrow & Vane is a UK garden retailer with 8,400 live SKUs and £26M of online revenue. After the March core update, organic sessions fell 34% and organic revenue 29% year on year, and neither has recovered.

716 words, about 4 min
3

Lumen Botanics: creator risk and a collapsing reach engine

Lumen Botanics is a €22M direct-to-consumer skincare brand. Its growth engine is a rolling creator programme: 180 creators on affiliate-style terms, with 62% of new customers last year attributed to TikTok via creator codes and last-click.

938 words, about 5 min
4

Meridian Gate: AI content at scale, flat pipeline, and a wrong description in assistants

Meridian Gate is a B2B cybersecurity vendor with €60M ARR selling to mid-market IT and security leaders. Nine months ago the content team of four adopted an AI drafting assistant and scaled from 12 to 40 articles a month.

723 words, about 4 min
5

Cargolane and Vantage: brand architecture and martech after a merger

Cargolane and Vantage Routing merged seven months ago. Cargolane brought €45M ARR, 1,900 mostly SMB self-serve customers and strong organic search visibility.

922 words, about 5 min