Curious about how AI agents actually work—and how to build one yourself?In this hands-on tutorial, I walk you through everything you need to know to get started. Whether you're a developer looking to build intelligent workflows with the OpenAI Agent SDK or someone who prefers a low-code approach using Lyzr AI, this guide covers it all.We’ll explore how to:
Create an AI-powered email assistant using OpenAI Agent SDK, Resend, and Firecrawl
Deploy your agent efficiently using Nebius AI Studio for low-cost inference
Build the same kind of agent—without writing code—using the Lyzr AI platform
This is a great starting point if you're building internal tools, automating workflows, or just exploring how agents can power real-world AI apps.? Watch the full tutorial and start building your own agent today.




✅ Tools Resources

Lyzr AI (low-code agent builder): https://dub.sh/lyzrAI
OpenAI Agent SDK: https://platform.openai.com/docs/guides/agents
Nebius AI Studio (affordable inference): https://dub.sh/AIStudio
Resend (developer email platform): https://dub.sh/reSend1
Firecrawl (web scraping for LLMs): https://dub.sh/firecrawl1
Related Blog (How to Build AI Agents with Lyzr): https://www.lyzr.ai/blog/

Modernizing legacy applications is essential for businesses to stay competitive, improve efficiency, and enhance security. However, many organizations delay the process due to concerns about potential downtime and operational disruptions. The key is to adopt a legacy application modernization services strategy that ensures a seamless transition while keeping daily business functions running smoothly.1. Adopt a Phased Modernization Approach
A complete overhaul of your legacy system can be risky and disruptive. Instead, consider a phased modernization strategy:
Prioritize critical applications that need immediate upgrades while keeping less essential ones running.
Use parallel systems to ensure business continuity by running the old and new applications side by side.
Gradually migrate workloads to minimize sudden disruptions.
2. Implement a Hybrid Cloud Strategy
Moving to the cloud offers flexibility, scalability, and cost-efficiency. However, an abrupt shift can disrupt operations. A hybrid cloud approach can help by:
Keeping sensitive workloads on-premises while transitioning non-critical ones to the cloud.
Ensuring seamless data synchronization between legacy and modern systems.
Allowing employees to adapt gradually to cloud-based applications.
3. Leverage Containerization and Microservices
Modernizing monolithic applications into microservices-based architectures helps minimize disruptions. Benefits include:
Breaking down applications into smaller, manageable services that can be updated independently.
Reducing downtime by deploying updates without affecting the entire system.
Enhancing scalability, making it easier to introduce new features.
4. Automate Testing and Deployment
Automated testing and DevOps practices ensure that new applications function correctly before deployment. This minimizes errors and disruptions.
Continuous Integration and Continuous Deployment (CI/CD) pipelines enable frequent, small updates instead of one major release.
Automated testing tools detect and fix issues before they impact users.
Rollback mechanisms ensure quick recovery if an issue arises.
5. Train Employees and Communicate Changes
Resistance to change and lack of training can create operational slowdowns. Ensure:
Employees receive training on new applications before full deployment.
Communication is transparent so that teams understand the benefits of modernization.
Feedback loops exist for employees to report issues early.
Final Thoughts
Application modernization doesn’t have to mean business disruption. By adopting phased migration, leveraging cloud solutions, using microservices, automating deployment, and ensuring proper training, companies can modernize seamlessly.Studies have shown that organizations that implement structured modernization strategies experience fewer disruptions, increased productivity, and improved business agility.

Objective: To achieve visualization of progress.Knowledge points:
Progress： Progress bar component, used to display the progress of content loading or operation processing.Set progress bar style
Progress has 5 optional types, and you can set the progress bar style through ProgressType. ProgressType types include: ProgressType.Linear (linear style) ProgressType.Ring (ring without scale style), ProgressType.ScaleRing (ring with scale style), ProgressType.Eclipse (circular style), and ProgressType Capsule (capsule style).interface
⛶Progress(options: ProgressOptions)Create a progress bar component.ProgressOptionsobject
value： Specify the current progress value. When setting a value less than 0, set it to 0; when setting a value greater than total, set it to total. Default value: 0
total： Specify the total length of the progress. When setting a value less than or equal to 0, set it to 100. Default value: 100
type： Specify the type of progress bar. Default value: ProgressType.LinearProgress attribute
⛶value(value: number) //Set the current progress value. When setting a value less than 0, set it to 0; when setting a value greater than total, set it to total. Illegal values are not valid. Default value: 0
color(value: ResourceColor | LinearGradient) //Set the foreground color of the progress bar.
style(value: ProgressStyleOptions | CapsuleStyleOptions | RingStyleOptions | LinearStyleOptions | ScaleRingStyleOptions | EclipseStyleOptions)//Set the style of the component.
contentModifier(modifier:ContentModifier)//On the progress component, customize the content area method. modifier: Content modifier, developers need to customize the class to implement the ContentModifier interface.
privacySensitive(isPrivacySensitiveMode: Optional)//Set privacy sensitive, reset progress to zero in privacy mode, and text will be masked. Explanation: Setting null is insensitive. Card framework support is required.ProgressConfiguration property
Value: Current progress value. When the set value is less than 0, set it to 0. When the set value is greater than total, set it to total. Default value: 0, value range: [0, total]
Total: The total length of the progress. Value range: [0, +∞]
CommonProgressStyleOptions property
enableSmoothEffect： The switch for smooth progress and dynamic effects. After enabling the smooth motion effect, the progress will gradually change from the current value to the set value. Otherwise, the progress will suddenly change from the current value to the set value. Default value: trueProgressStyleOptions property
StrokeWidth: Set the width of the progress bar (percentage setting is not supported). Default value: 4.0vp
ScaleCount: Set the total degree of the circular progress bar. Default value: 120, value range: [2, min (width, height)/scaleWidth/2/π]. If it is not within the value range, the style will display as a circular progress bar without a scale.
ScaleWidth: Set the thickness of the circular progress bar scale (percentage setting is not supported). When the scale thickness is greater than the width of the progress bar, it is the system default thickness. Default value: 2.0vp
Actual combat:ProgressBarDemoPage
⛶@Entry
@Component
struct ProgressBarDemoPage {
@State isStart: boolean = false
@State value: number = 0
timer: number = 0

build() {
Column({ space: 20 }) {
Text('进度条Demo')

Text(`当前进度：${this.value}%`)

Progress({ value: this.value, total: 100, type: ProgressType.Linear })
.style({ strokeWidth: 10, enableSmoothEffect: true })

Row({ space: 20 }) {
Column({ space: 10 }) {
SymbolGlyph(this.isStart ? $r('sys.symbol.pause') : $r('sys.symbol.play_fill'))
.fontSize(30)
.renderingStrategy(SymbolRenderingStrategy.SINGLE)
.fontColor([Color.Black])
Text(this.isStart ? '暂停' : '开始')
}
.onClick(() = {
this.isStart = !this.isStart
this.updateProgress()
})

Column({ space: 10 }) {
SymbolGlyph($r('sys.symbol.arrow_counterclockwise'))
.fontSize(30)
.renderingStrategy(SymbolRenderingStrategy.SINGLE)
.fontColor([Color.Black])
Text('重置')
}
.onClick(() = {
clearInterval(this.timer); // 关闭定时器
this.value = 0
})
}
}
.height('100%')
.width('100%')
.padding({ top: 10, right: 20, left: 20 })
}

updateProgress() {
if (this.isStart) {
this.timer = setInterval(() = {
this.value = this.value + 1;
if (this.value === 100) {
clearInterval(this.timer); // 关闭定时器
}
}, 100)
} else {
clearInterval(this.timer); // 关闭定时器
}
}
}