A2P messaging
Application-to-person messaging is communication sent from a business application to an individual, such as an OTP, alert or service update.
19 maintained definitions
Business Communication & AI Glossary
This glossary defines common communication and AI terms in plain language. Definitions are educational and should be read alongside the current platform, telecom and regulatory documentation relevant to a specific implementation.
Plain-language definitions
Common terms, clearly explained.
Use these definitions as a starting point, then confirm current provider, technical and regulatory requirements for the implementation.
AEO
Answer Engine Optimisation structures visible content so search and assistant systems can identify a clear, accurate answer supported by useful context.
AI agent
A software system that interprets input and completes a defined set of actions using approved tools, rules and data, with human oversight where needed.
API
An Application Programming Interface is a documented way for authorised software systems to exchange requests, data and events.
CPaaS
Communications Platform as a Service provides programmable messaging, voice and related communication capabilities through APIs and managed platforms.
Delivery receipt
A delivery receipt is a network or platform status event indicating what happened to a submitted message; it is not always proof that a person read or acted on it.
DLT
In Indian commercial messaging, Distributed Ledger Technology platforms are used by ecosystem participants for processes such as entity, sender and template registration.
DTMF
Dual-Tone Multi-Frequency is the keypad signalling used when a caller presses digits during an IVR or voice campaign.
Fallback
A fallback is an alternate channel or path used when the preferred message, workflow or response cannot be completed.
GEO
Generative Engine Optimisation improves entity clarity, evidence, authorship and content relationships so generative systems can understand and cite reliable information.
IVR
Interactive Voice Response is an automated telephone system that presents information, gathers caller input and routes calls or workflows.
Knowledge grounding
Knowledge grounding limits an AI response to approved sources and provides source context instead of relying only on a model’s general training.
Opt-in
An opt-in is a recorded indication that a person agrees to receive a described type of communication through a stated channel or purpose.
OTP
A one-time password is a short-lived code used as one element of an authentication or verification process.
RCS Business Messaging
RCS Business Messaging is a carrier-supported rich messaging channel offering verified branding and interactive content on compatible devices and networks.
SMPP
Short Message Peer-to-Peer is a protocol used to exchange SMS traffic and delivery information between suitable messaging systems.
Transactional message
A transactional message communicates information required for a transaction, account or service event, subject to the channel rules that apply.
Webhook
A webhook sends an event payload from one system to a configured endpoint when something occurs, such as a delivery update or form submission.
WhatsApp Business Platform
WhatsApp Business Platform is Meta’s API-based business messaging environment for approved notifications and customer conversations under applicable policies.
Using the glossary
Context still matters.
Are these definitions legal or regulatory advice?+
No. The glossary provides general educational explanations. Product, regulatory and legal requirements should be confirmed for the actual use case.
How are glossary terms maintained?+
Terms should be reviewed when technologies, provider policies or operating practices change, with an updated date recorded in the content release.
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