Every platform ambition eventually tempts you to swallow a neighbouring category. We have said no to four of them on purpose, and it is worth writing down why, because the no is a feature.
Sonic does not process payments. Stripe and Razorpay collect on an invoice; we match what lands in the bank to the invoice it paid, including partials and near-matches on payer name. Building a processor would mean asking customers to move their payment relationships to us for no reason other than our convenience. That is not a reason.
Sonic is not a tax engine or a tax return of record. GST, VAT, and other line-item rates are configuration you own and apply; we do not maintain global tax law as a determination engine, and we will not pretend otherwise on a sales call.
Sonic is not your general ledger. NetSuite, or whatever ERP holds your chart of accounts, remains the book of record. We produce journal-ready entries with a debits-equal-credits guarantee and a trail back to the source invoice or shipment — the input a controller needs, not a replacement for the ledger they already trust.
Sonic is not a CPQ. We read what the CPQ or the signed PDF produced — the actual agreed terms — and turn that into a schedule or a rated shipment. Quoting logic, discount approval chains, and deal desk workflow live upstream of us.
The pattern in all four: we own the chain from agreement to journal, and we hand off cleanly at both ends. A platform that claims all six categories has usually built one well and is improvising on the rest.