If you want to be super successful, you build it on Salesforce. Full stop. Two - two! - different vertical CRMs (ServiceMax and Veeva) have BILLION dollar valuations built entirely on the SFDC stack.
It'll answer all technical questions, make it easier to hire, and make it easier to fundraise. Oh! And easier to get customers.
Then think about how people get info into your system - if its email, use Nylas (it's gonna be email to start). If it's voice, use Twilio. If it's directly, then abstract all the complexity and use the right terms for your market.
I don't work for Salesforce, I never have in the past, and I barely use it now. But choosing anything else is nuts.
We've basically done this and in most ways it's certainly true, but it's also incredibly inflexible and slow to develop. Apex and Salesforce's platform limitations are a nightmare. Nearly everyone contracting in this space delivers a shitty end-product and it's difficult to hire full-time developers to do Salesforce because they all want to contract (it's so lucrative!). You will sink a lot of cost into training developers on the platform and then risk them leaving you to do contracting.
And if you run a 24/7 business or for any reason can't shut down your CRM for 8+ hours ever, god help you if you ever need to do something to modify millions of records like ETL. I have about 2 weeks of concurrent sleepless nights I can blame entirely on Salesforce.
It'll answer all technical questions, make it easier to hire, and make it easier to fundraise. Oh! And easier to get customers.
Then think about how people get info into your system - if its email, use Nylas (it's gonna be email to start). If it's voice, use Twilio. If it's directly, then abstract all the complexity and use the right terms for your market.
I don't work for Salesforce, I never have in the past, and I barely use it now. But choosing anything else is nuts.