Salesforce — market leader (21 % share), but overkill for most small companies. Starts at $25/user/mo, realistically $100-200+ with admin, consulting, dev hours. 2026 alternatives: HubSpot (mid-market freemium), Microsoft Dynamics 365 (deep Microsoft stack), Zoho CRM (lowest cost), Attio (modern dev-friendly), Creatio (BPM + CRM, low-code). For Runet: AmoCRM, Bitrix24.
Below: details, example, related, FAQ.
# Salesforce REST API (OAuth 2.0 password flow)
$ curl https://login.salesforce.com/services/oauth2/token \
-d 'grant_type=password&client_id=XX&client_secret=YY&username=user&password=PW+TOKEN'
# Dynamics 365 Web API
$ curl 'https://<ORG>.crm.dynamics.com/api/data/v9.2/accounts' \
-H 'Authorization: Bearer ' \
-H 'Content-Type: application/json; odata.metadata=minimal'If you have fewer than 20 sales reps and no custom business logic. Start with HubSpot/Pipedrive, migrate at $10M ARR.
HubSpot → Salesforce = $50-150k (data migration + config + training). Reverse is harder (ecosystem lock).
Yes if Azure AD/Teams/Office 365 are deeply used. Single SSO, integrated Power BI.