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045: Multitenant Architecture with Ian Varley

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The whole point of software as a service is to allow our customers to not have to worry about all of the ins and outs of a program’s workings. Thanks to this, there are many things that Salesforce customers simply never need to worry about. We make sure everything works so that they experience no interruption.

Multitenant architecture is a program that allows Salesforce to accomplish just this. Ian Varley is a Principal Architect here at Salesforce and he has been working on this program for the last 10 years. Beyond software engineering, Ian has also earned degrees in philosophy and music. In this episode, we discuss multitenant architecture and all of its facets.


Show Highlights:

  • The core idea of what multi-tenancy is.
  • How we can architecturally define the tenant.
  • How to go about grouping the kinds of services that operate with multi-tenancy.
  • The complicated world of microservices.
  • How acquisitions look and work together within Salesforce.
  • What the application Salesforce core looks like.
  • How metadata works from a physical database layer point of view.
  • Why awareness of cognitive bias is important to this field of work.



  1. Ian on Twitter: https://twitter.com/thefutureian
  2. Ian on LinkedIn: https://www.linkedin.com/in/ianvarley/
  3. Brains Considered Harmful: https://www.oreilly.com/library/view/oreilly-software-architecture/9781492050605/video325607.html


Shout Out

  1. Steven Tamm: https://twitter.com/tammforce




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