TLS Handshake Executive Infographic | gsm flow chart

Tech architecture infographic titled "TLS Handshake" using the PROTOCOL HANDSHAKE archetype, designed for a non-technical executive audience. Show a clean left-to-right numbered exchange between clearly labeled boxes connected by directional arrows. Main boxes: 1) Client Browser — icon: desktop browser; role: initiates secure HTTPS connection. 2) DNS Resolver — icon: network node; role: translates domain name to server IP. 3) Web Server / API Endpoint — icon: server rack; role: presents TLS certificate and negotiates session settings. 4) Certificate Authority Trust Store — icon: certificate badge; role: provides trusted issuer validation reference. 5) Session Key Establishment — icon: key exchange symbol; role: derives shared symmetric encryption keys. Optional supporting boxes in smaller size for executive context: Load Balancer — icon: traffic splitter; role: routes incoming HTTPS traffic. Application Service — icon: microchip; role: handles business logic after secure channel is established. Database — icon: cylinder; role: stores application data after handshake completes. Do NOT force cache or queue into the main handshake unless shown as dimmed optional downstream systems labeled 'not part of TLS handshake'.

Render each box with an icon, a canonical English name, and a one-line English role description. Connect boxes with arrows showing accurate protocol flow and data direction. Label arrows with short English phrases such as: 'DNS query', 'DNS response: IP address', 'TCP SYN', 'TCP SYN-ACK', 'TCP ACK', 'ClientHello', 'ServerHello + Certificate + Key Share', 'Certificate validation', 'Client Key Share + Finished', 'Server Finished', 'Encrypted HTTPS request', 'HTTP 200 response over TLS'.

Depict the handshake sequence accurately for modern TLS, preferably TLS 1.3, while keeping it simple and executive-friendly. Show the numbered exchanges prominently: (1) DNS lookup for hostname. (2) TCP 3-way handshake between browser and server. (3) ClientHello proposes TLS version, cipher suites, SNI, ALPN, and key share. (4) ServerHello returns selected parameters, certificate, and key share. (5) Browser validates certificate chain against trusted CA store and checks hostname. (6) Both sides derive shared session keys and exchange Finished messages. (7) Encrypted HTTPS application data begins flowing to API / app / database systems. If showing application backend, separate the handshake zone from the application zone with a subtle divider labeled 'After TLS established'.

Add a numbered legend (1-7) in English walking through the lifecycle: 1. Browser resolves the domain to an IP address. 2. Browser opens a TCP connection to the server. 3. Browser sends ClientHello to start TLS negotiation. 4. Server responds with ServerHello and its certificate. 5. Browser validates the certificate using its trust store. 6. Both sides derive symmetric session keys and confirm the handshake. 7. HTTPS requests and responses now travel encrypted to the application. Include a small note in English: 'Illustrative overview, not an audited security architecture.'

Visual style: retro 1980s computing, blueprint cyan palette, dark blueprint background with cyan line art, white and light-cyan text, subtle grid paper texture, glowing vector outlines, old-terminal inspired framing, but still polished for a modern developer-blog illustration. Overall mood: trustworthy, technical, executive-readable, schematic, precise, slightly nostalgic. Use editorial developer-blog illustration, isometric or flat tech-diagram style, vector-clean infographic layout. All text MUST be written in English (array). Every heading, label, caption, legend and metric name in the image must be in English — not English. Spell each English word correctly using English characters and diacritics. Numbers stay as digits, no real cloud-vendor logos (AWS / GCP / Azure) — use generic cloud icons, no watermarks No real cloud-vendor logos (AWS, GCP, Azure) beyond generic cloud icons. Common protocol names (HTTPS, TCP, JWT, OAuth, REST, GraphQL) stay in canonical English form. No security-claim overstatements (do not present diagrams as audited reference architectures).