Ad headline
Already optimized? There is still 40% left
Pattern: Named customer as hero
Understory ranks No. 140 on Inc. 5000 list of fastest-growing companies in U.S. Read more about Understory on the 2026 Inc. 5000 list
CAST AI has 126 distinct ad creatives in our B2B ad libraries, 67 on Google (62 search, 5 display), 38 on LinkedIn and 21 on Meta. Its longest running ad has been shown on Google for 20 months. 28 of its ads scored 6 or higher out of 10 for B2B fit and craft.
Cloud cost & FinOps · cast.ai
Each creative counted once, however many ads it runs as. Every platform publishes a different public sign an ad is working, so each row shows its own.
Every ad in our libraries is scored out of 10 by an AI model built to judge creative, up to 5 for how well it would land with a senior B2B buyer and up to 5 for craft. 28 of CAST AI's ads scored 6 or higher. We show the best in English, one per message and spread across channels, so no single campaign fills the list.
Ad headline
Already optimized? There is still 40% left
Pattern: Named customer as hero
Pattern: Named customer as hero
Pattern: Editorial data page
Ad headline
Spot placement is the whole game
Pattern: Editorial data page
Ad headline
See where the waste hides - free 2026 report
Pattern: Typographic sting

Pattern: Product UI with real numbers

Ad headline
Another 3 AM alert?

Ad headline
Are your compute instances sitting idle?

Ad headline
Stateful doesn’t have to mean stressful
62 search ads and 5 display ads that ran for a month or more, 26 of them for three months or more. Below are the ones Google has shown longest, search and display apart.
| Type | CAST AI | Cloud cost & FinOps advertisers |
|---|---|---|
| Search text ad | 93% (62) | 90% |
| Display image ad | 7% (5) | 10% |
See the best B2B Google ads from every advertiser in the Google ad library.
38 distinct creatives, run as 200 separate ads, 1 of them sent from a named person. LinkedIn shares no performance data for US ads, so the best public sign an ad is working is how often CAST AI reruns it. These are the creatives it reruns most.
| Type | CAST AI | Cloud cost & FinOps advertisers |
|---|---|---|
| Single Image | 92% (35) | 75% |
| Document | 5% (2) | 2% |
| Message | 3% (1) | 8% |
| Type | CAST AI | Cloud cost & FinOps advertisers |
|---|---|---|
| No offer (brand) | 82% (31) | 80% |
| Report or guide | 11% (4) | 8% |
| Webinar or event | 5% (2) | 8% |
| Free trial | 3% (1) | 0% |
Ad copy
CPU overprovisioning rose from 40% to 69% in a single year. Memory overprovisioning hit 79%.
Ad headline
Automotive Cloud Costs Are Spiraling
Ad copy
Cast AI automates optimization so your engineers stop firefighting infrastructure.
Ad headline
Automotive Runs On Performance
Ad copy
Connected vehicles, OTA updates, AI systems, automotive innovation depends on scalable cloud infrastructure.
Ad copy
See how Mercedes-Benz.io automated Kubernetes operations with Cast AI.
Ad headline
2026 Kubernetes benchmarks - free report
Ad copy
Average CPU utilization across 23,000+ Kubernetes clusters in 2025: 8%. Down from 10% the year before. Memory: 20%.
Ad copy
A real cluster from our dataset: 44.87 CPUs provisioned. 24.9 requested. 3.94 actually used.
Ad headline
See where the waste hides - free 2026 report
Ad copy
CPU overprovisioning went from 40% to 69% in a single year. Memory: 79%.
See the best B2B LinkedIn ads from every advertiser in the LinkedIn ad library.
21 distinct creatives, 0 of them shown for three months or more. Advertisers stop paying for ads that don’t work, so these are the ones Meta has shown longest.
| Type | CAST AI | Cloud cost & FinOps advertisers |
|---|---|---|
| Single image | 100% (21) | 50% |
| Type | CAST AI | Cloud cost & FinOps advertisers |
|---|---|---|
| No offer (brand) | 33% (7) | 76% |
| Demo | 29% (6) | 10% |
| Free trial | 29% (6) | 6% |
| Report or guide | 5% (1) | 7% |
| Webinar or event | 5% (1) | 1% |

Ad headline
After re:Invent, the next step is proof
Ad copy
Great talking at re:Invent. Ready to go deeper? See how Cast AI can optimize your Kubernetes costs with zero effort.

Ad headline
Another 3 AM alert?
Ad copy
Pager fatigue is real. We’ll keep your workloads stable so you can finally sleep through the night.

Ad headline
Are your compute instances sitting idle?
Ad copy
Most companies are burning their budgets on unused resources. You don’t have to!

Ad headline
80% cost reduction. Zero downtime.
Ad copy
See how NielsenIQ used Cast AI automation to slash Kubernetes costs while keeping performance rock-solid.

Ad headline
Free until your Spot.io contract ends
Ad copy
Switch from Spot.io without paying twice. Move to full Kubernetes automation with zero disruption and no overlapping costs

Ad headline
Got 4 minutes?
Ad copy
That’s all you need to see how Cast AI cuts costs and automates Kubernetes. Watch the demo.

Ad headline
Stateful doesn’t have to mean stressful
Ad copy
Cast AI automates migration so your apps stay online, always.

Ad headline
Too much manual work in Kubernetes?
Ad copy
Most teams waste hours on cluster chores. You don’t have to – we’ll take the management burden off your plate.
See the best B2B Meta ads from every advertiser in the Meta ad library.
In the public ad libraries we track, CAST AI runs ads on Google, LinkedIn and Meta, 126 distinct creatives in all, 67 on Google (62 search, 5 display), 38 on LinkedIn and 21 on Meta. Most of its creatives are on Google.
67 on Google (62 search, 5 display), that ran for a month or more in Google’s Ads Transparency Center. Longest shown for 20 months.
38 distinct creatives, run as 200 separate ads in LinkedIn’s Ad Library. Its most rerun creative runs as 45 ads.
21 distinct creatives in Meta’s Ad Library. Longest shown for 29 days.
Search CAST AI by name in each platform’s own public library, Google’s Ads Transparency Center, LinkedIn’s Ad Library and Meta’s Ad Library. Every ad on this page links to its entry there.
Every ad belongs to CAST AI. Understory is not affiliated with CAST AI. We collect public ads from each platform's own ad library to study what B2B advertisers run. Use them for ideas and make your own creative.
Or browse every B2B ad library.
We brief, design and run paid campaigns for B2B teams on LinkedIn, Google, Meta, Reddit and X, measured on pipeline in your CRM. Tell us what you sell and who you sell it to.