What is an API?
An API is a way for two systems to talk to each other.
API stands for Application Programming Interface. In simple terms, it lets one piece of software send information to another piece of software and get a response back.
For businesses, APIs are useful because they connect systems. A website, CRM, ecommerce platform, booking tool, or app can use an API to trigger actions automatically instead of relying on manual work.
Requests and responses
An API works through requests and responses. One system sends a request.
The other system receives it, processes it, and sends back a response.
For example, a business system might send a request that says:
Send this SMS message to this customer.
The API receives the request and returns a response that confirms whether the request was accepted.
MyLINK SMS API as an example
MyLINK SMS API is a practical example of how an API works in business messaging.
A company can connect MyLINK SMS API to its own systems and use it to send SMS automatically.
This can be useful for messages such as:
Two-factor authentication
Delivery updates
Appointment reminders
Order confirmations
Payment reminders
Service alerts
Instead of a person writing and sending each message manually, the business system can trigger the SMS at the right moment.
For example, when a customer places an order, the ecommerce platform can use MyLINK SMS API to send an order confirmation. When the order is shipped, the same system can trigger a delivery update.
Why businesses use APIs
APIs help businesses make communication faster, more consistent, and easier to manage.
They can help teams:
Reduce manual work
Send messages based on customer actions
Automate time-sensitive communication
Track message activity and delivery status
Scale messaging without changing the workflow
This is especially useful when messages need to be sent in large volumes or triggered by specific events.
API or webhook?
APIs and webhooks are often used together, but they do different jobs. An API is usually used when one system asks another system for something. A webhook is used when one system automatically sends information to another system after something happens.
A simple way to understand the difference is this:
An API is like asking a question.
A webhook is like getting a notification.
Where APIs fit
APIs are useful when a system needs to request something directly.
For example, a business system can use MyLINK SMS API to send a message, check information, or connect SMS into a customer flow. The system asks for an action, and the API responds.
This makes APIs broad and flexible. They can be used to create, read, update, or change information, depending on what the API supports.
A simple example is a banking app. When a user taps refresh to see their balance, the app sends an API request. The bank system responds with the latest account information.
Where webhooks fit
Webhooks are useful when a system needs to be notified automatically.
Instead of checking again and again to see whether something has changed, the business system receives a message when a specific event happens.
For example, after a message is sent, a delivery report can be sent back to the business system. The business does not need to keep asking for updates. The update is pushed when the delivery event happens.
This is useful for message delivery reports, replies, status changes, order events, payment events, and other real-time updates.
Why webhooks reduce extra work
Without webhooks, a system may need to poll an API. Polling means the system checks repeatedly for updates.
That can work, but it is not always efficient. If nothing has changed, the system still uses time and resources to ask.
Webhooks avoid this by sending data only when something happens. For business messaging, this is useful because delivery updates, replies, and status changes can be sent automatically to the systems that need them.
API vs manual sending
An API is best when messages need to be automated or connected to another system. Manual sending is better when a team wants to write and schedule individual campaigns.
APIs keep business messaging connected
An API is a connection between systems. It lets software send requests, receive responses, and trigger actions automatically.
In business messaging, APIs make it possible to connect customer communication to the systems companies already use. With MyLINK SMS API, businesses can send SMS messages from websites, apps, CRMs, ecommerce platforms, booking tools, and other systems.
Webhooks add another layer by sending updates back when something happens. Together, APIs and webhooks help businesses send messages, track outcomes, and keep customer communication connected to internal systems.
Did you find the article and topic interesting?
If you would like to explore the subject further, discuss ideas, or understand how it could apply to your business, we are here to continue the conversation.