What we do in HubSpot
Lifecycle stage design. The foundational piece and the one most often skipped. What each stage means, what gets a record into it, what gets it out. Agreed by marketing and sales in the same room, not defined separately and reconciled later.
The marketing-to-sales handoff. Routing, ownership, SLAs, and the return path when sales sends a lead back. This is where most B2B SaaS funnels leak, and it is almost always a definition problem rather than an automation problem.
Attribution and reporting. An attribution model fit to your motion rather than whichever one the tool defaults to. Wired to the real source of truth, so every number has a paper trail and the budget conversation stops being a knife fight.
The Salesforce seam. If you run both, this is likely the largest single piece of work. See below.
Implementation and migration. When HubSpot is being stood up or replacing something else, we do the build, including the data migration and the model decisions that come with it.
Change management. Adoption designed in from the first stage, documentation written for humans, and support until your team runs it without us in the room.