Salesforce says it will use Microsoft's Azure for its Marketing Cloud service, signaling a thaw in a complicated relationship
- Salesforce will deploy its Marketing Cloud service on Microsoft's Azure public cloud infrastructure. — Salesforce already uses Amazon Web Services …
Context & Ripple Effects
Salesforce has been building out its multi-cloud posture since 2016, when it committed to spend $400M on AWS over four years and moved its IoT service onto Amazon's infrastructure. Marketing Cloud itself was assembled through acquisition — including the $700M Krux purchase that closed its ad-tech gap with rival marketing clouds — so it arrives at Azure as a product Salesforce already runs across other providers.
First-order effects
- Microsoft gains a marquee SaaS workload on Azure from a company long framed as a direct competitor in CRM and business applications, turning a rivalry into a supplier relationship for this service.
- Salesforce's infrastructure mix now spans AWS and Azure simultaneously, reducing its dependence on any single hyperscaler for capacity and pricing leverage.
Second-order effects
- AWS faces a precedent where a flagship customer publicly splits workloads across rivals, strengthening the case for the deeper integration and marketplace terms it later negotiated with Salesforce.
- Azure's sales team gets a reference customer to pitch against AWS in enterprise accounts where Salesforce is already deployed, sharpening hyperscaler competition for SaaS tenants.
Third-order effects
- If major SaaS vendors routinely run products on competitors' clouds, infrastructure becomes a commodity layer beneath application rivalries — co-opetition rather than platform exclusivity becomes the default enterprise structure.
The trend: Enterprise SaaS is decoupling from single-cloud dependence, with hyperscalers competing to host even their own rivals' applications.