An API, or Application Programming Interface, is like a standardized language. It allows computer programs to communicate with each other in fast, reliable ways.

Specialized in Building and Integrating APIs in various streams like:

API Types:

1. Payment Gateways (Used/Transferred): PayPal (direct, split and hierarchy based payments), CCAvenue (all), HDFC (Net Banking) and more
2. Digital/E-Signature (Used/Forwarded): HelloSign (Online), ESign (offline), DocuSign (both) etc.
3. Telecommunications (Used): Asterisk (Inbound offline), Avaya (Outbound), Aspire (both offline), Galaxy V3 (Both online/active links)
4. Banking and Finance/Accounting (Used): Balance Transfer and enquiry (Yes Bank), Reload (enStage)
5. File Server and applications (Used/Built): AWS File API, Customized FTP API (Built)
6. Email Integrations (Used): Gmail, Hotmail, Yahoo and other hosting etc.
7. Chat/SMS (Used): Skype Chat, WhatsApp, WhiteList SMSAPI, SMS Speed etc.
8. Map (Used): Bing Map, Google Map
9. Shipment API (Used/Built): BlueDart, Customized outbound (Built)
10. KYC Validation (Used): Yes Bank, YBL and HDFC
11. E-Comm. website (Built): OXID
12. CRM (Used): SugarCRM, SuiteCRM etc.
13. Advertiser Service (Used): Criteo

API Technologies:

1. SOAP based
2. REST based
3. RPC based
4. Socket based
5. cURL based (PHP specific)

API Workflows:

1. Asynchronous: The actions are independent of earlier event (e.g. a manual action required for process to complete so the next action has to weight)
2. Synchronous: Action are dependent of earlier event (e.g. a complete transaction under one process)
3. Pull: Scheduler based APIs where data is fetched from the server
4. Push: Event based where data is pushed on an event at server end.