Hi Team, I am building an SaaS product but infrastructure wise I want to create an single tenant cloud infrastructure in either AWS or Azure (based on customer choice). I am also planning to use more of Serverless functions/lambdas. Is Pulumi right choice for it ? Any whitepaper or case study would be helpful.

Pulumi is absolutely the right choice! The programming model supports providers for both AWS and Azure (as well as GCP, Kubernetes and others)- and you can easily build Pulumi programs to support this tenancy model. Here are some resources to get you started: https://www.pulumi.com/serverless/ https://www.pulumi.com/templates/serverless-application/aws/ https://www.pulumi.com/case-studies/