ExtendStack.
One platform under every product. Portal-installed, your auth, your data layer.
The problem it removes.
Two capabilities, one scenario each.
One architecture, every product.
HubLMS, RocketPRM, Cohortium, and Peerfold are ExtendStack apps: the same portal-installed runtime, the same object patterns, the same upgrade path. Evaluate the architecture once and every subsequent product inherits the review. Scenario: your second ExtendStack app clears security in days because the first one wrote the precedent.
What portal-native means for security review.
ExtendStack apps run inside your HubSpot portal. Customer data stays in your portal's data layer, access rides your portal's existing auth and permissions, and offboarding a user is offboarding them once. There's no vendor-side copy of your CRM to audit, because there's no vendor-side copy.
ExtendStack is the reason every Impulse product answers a security questionnaire the same way: your portal, your auth, your data layer, nothing separate to secure.
ExtendStack extends the Kernel itself: apps become capabilities of your source of truth instead of satellites orbiting it.
What procurement actually reviews.
The build-vs-buy question hides a third option: apps that install into the system you already govern. Procurement reviews the difference below.
Asked by buyers like you.
What does a security review of an ExtendStack app look like?
Shorter than you're used to, because the surface area is smaller. The app runs in your portal against your data layer; there's no vendor database holding a copy of your CRM. Review scopes to the app's declared permissions and the platform's practices. Our security posture page carries the standing answers, and we complete questionnaires directly when they're needed.
Do ExtendStack apps work outside HubSpot?
No, by design. Portal-native is the architecture, not a deployment option among several. The tradeoff is explicit: you give up platform independence and get back a data boundary that never leaves a system you already govern. For teams committed to HubSpot as the kernel, that trade is the point.
What happens when we uninstall?
The app's objects and properties remain portal data, which means they remain yours. Uninstalling removes the app's functionality, not your records. There's no export negotiation because there's nothing to export from anywhere; it was in your portal the whole time.
Try it at extendstack.com, or map it first.
The trial lives on the product's own domain. The diagnostic tells you whether this is the right layer to start with.