Software Development Life Cycle – Introduction Model Stages and Advantages

What is the Software Development Life Cycle (SDLC)?

SDLC or Software Development Life Cycle is essentially the process or phases of a model or methodology, which software engineers and developers follow in developing an application or software. In simpler words, it is a process consisting of a series of planned activities for planning, creating, testing, deploying and maintenance of software.

SDLC is often referred as software development process, as it consists of all tasks, which needs to be followed while developing an application or software. SDLC is followed within IT development companies to develop, alter, replace or enhance the performance of the software. ISO/IEC 12207 is an international standard for SDLC, which ensures high quality of the newly developed software. It also helps IT development companies in improving the overall quality of their software development services.

What are the major SDLC Models, followed in the IT Industry?

There are various SDLS models, which are currently followed in the IT Industry. Often referred as ‘Software Development Process Models’, all the process models follow unique software development steps, ensuring 100% success of the development projects.

The major software development life cycle models are-

  • Waterfall Model
  • Iterative Model
  • Spiral Model
  • V-Model
  • Big Bang Model

Other related models are Rapid Application Development (RAD), Prototype and Agile Models.

The advantages of choosing an appropriate Software Development Life Cycle (SDLC)-

  • Increased Product Quality
  • Increased Development Speed
  • Improved Client Relations
  • Improved Tracking & Control
  • Decreased Project Risks
  • Decreased Project Management Overhead

What are the different stages of SDLC?

Stage 1:

Planning and Requirement Analysis

This is the most important stage in the SDLC. This stage needs input from the customers, sales team, industry experts, a marketing team and their survey reports. After which, senior business managers and developers of a software development company plan the project approach and the development model.

Stage 2:

Designing

After the analysis of requirements and finalizing the Design Document Specification (DDS), the product architecture is designed by an expert team. This architecture has to stand upon various parameters such as budget, time, product robustness, risk assessment and design modularity, after which it is considered for the development.

Stage 3:

Development

The actual development of the software or application starts at this stage. The team of engineers and developers follow the coding guidelines set by the organization and use different tools for code generation. The programming code is generated as per the details documented in the DDS. The developers use different high level programming languages as per the requirement.

Stage 4:

Testing

In this stage, the final product goes through a pre-defined road of testing, where defects or bugs in the product are reported and then fixed by the developers. This stage ensures that the final product meets the highest quality standards, which are accepted worldwide.

Stage 5:

Deployment

At this stage, the final product is deployed at the client base. At times, the software is integrated with the client’s current application and database. All the deployment and integration works are done under the guidance of expert software engineers and developers.

Stage 6:

Maintenance & Support

Most of the reputed IT development companies also provide complete maintenance and technical support, post deployment of the final product at client base.

Spring Maintenance Checklist

Gutters and downspouts: Pull leaves and debris from gutters and downspouts. Reattach gutters that have pelled away from the house. Run a hose on the roof and check for proper drain. If leaks exist, dry the area and use caulking or epoxy to seal the leak.

Siding: Clean siding with a pressure washer to keep mold from growing. Check all wood surfaces for weathering and paint failure. If wood is showing through, sand the immediate area and apply a primer coat before painting. If paint is peeling, scrape loose paint and sand smooth before painting.

Exterior caulking: Inspect caulking and replace if deteriorating. Scrape out all of the eroding caulk and recaulk needed area.

Window sills, door sills, and thresholds: Fill cracks, caulk edges, repaint or replace if necessary.

Window and door screens: Clean screening and check for holes. If holes are bigger than a quarter, that is plenty of room for bugs to climb in. Patch holes or replace the screen. Save bad screen to patch holes next year. Tighten or repair any loose or damaged frames and repaint. Replace broken, worn, or missing hardware. Wind can ruin screens and frames if they are allowed flap and move so make sure they are securely fastened. Tighten and lubricate door hinges and closers.

Drain waste and vent system: Flush out system.

Hot water heater: Lubricate circulating pump and motor

Evaporative air conditioner: Clean unit, check belt tension and adjust if needed. Replace cracked or worn belt.

Heat pump: Lubricate blower motor.

Foundation: Check foundation walls, floors, concrete, and masonry for cracking, heaving, or deterioration. If a significant number of bricks are losing their mortar, call a professional. If you can slide a nickel into a crack in your concrete floor, slab or foundation call a professional immediately.

Roof: Inspect roof surface flashing, eaves, and soffits. Check flashings around all surface projections and sidewalls.

Deck and porches: Check all decks, patios, porches, stairs, and railings for loose members and deterioration. Open decks and wood wings need to be treated every 4-6 years, depending on how much exposure they get to sun and rain. If the stain does not look like it should or water has turned some of the wood a dark gray, hire a professional to treat your deck and fence.

Landscape: This is a natural for spring home maintenance. Cut back and trim all vegetation and overgrown bushhes from structures. Limbs and leaves can cut into your home's paint and force you to have that side of the house repaired. A little trimming can save a lot of money and time.

Sprinklers: Check lawn sprinkler system for leaky valves, exposed lines, and improperly working sprinkler heads. If there is an area of ​​your yard that collects too much water or does not get enough, run the sprinklers to figure out the problem. If it's not something you can fix yourself, call a professional before your lawn needs the water.

Telecommunications, the Next Generation

Irrespective of the geographical size of the country and its population, the telecommunications industry is likewise imperative for the financial system of any country as well the interests of the citizens living there. Formerly, the telecommunications sector comprried of the conventional landline telephone and television cable networks. At present, cellular phone services, Internet broadband networks, General Packet Radio Service and satellite television systems are the additional services which fall in the category of telecommunication.

Due to the advancement of technology in the telecommunication engineering, the globe is absolutely linked together. People from different parts of the world not only correspond very straightforwardly with each other, but they can also share boundless information with each other with the application of cell phones, internet and GPRS.

The telecommunication sector can be roughly divided into two divisions. First is the wired telecommunication and the other is the wireless telecommunication. Wireless telecommunication is the newest technology which is most preferred by people these days due to its simplicity and mobility.

The regular wired landlines telephones, wired television cable networks and wired internet connections are the prime models of wired telecommunication products. On the other hand, cellular phones, wireless internet connections like Wi-Fi technology and General Packet Radio Service are the significant instances of wireless telecommunication systems.

In wireless communication, the data is transferred from the basic source to the device users with the aid of radio towers. Cellular phones are the devices which have achieved recognition among people more rapidly than any other device of wireless communication.

3PL Logistics Solutions for Better Warehousing and Distribution

What is 3PL Logistics?

The term 3PL stands for third party logistics. It is a process that refers to the outsourcing of supply chain functions and logistics functions to a third-party provider. When one engages in a product manufacturing business, the process of shipping logistics becomes vital. There are many businesses that have ties with contract warehousing, commercial carriers, government postal services and various airlines to get their products shipped from the manufacturing facility all the way to the end customer. However, when the product is ready to ship, the 3PL logistics collect the package and conveniently deliver it to the end customer. The total shipping costs is billed by the service carrier to the business handling department. The third party logistics specializes in transportation and shipping, in turn saving the overall costs of the business and their need to invest in trucks, planes or employees to transport the goods or packages.

In brief, 3PL is a platform in logistics that manages and outsources goods of one company to another company. In the international business market, companies offering third-party logistics have gained a lot of popularity. They are becoming dominant in the field of supply chain management. The support and services that is provided by a third-party company normally include consolidation services, freight, delivery of freight and warehousing and distribution. 3PL services offer logistics solutions to domestic as well as international transactions.

Warehousing

Contract warehousing or also widely known as warehousing and distribution is another method that conveniently outsources to third party logistics. This facility is useful for those businesses that want to efficiently devote their time and efforts to other important priorities like sales, manufacturing and designing of the products. Basically, a third-party warehousing service reduces the number of employees needed and also the amount of space needed for a business to function smoothly.

Advantages of 3PL Logistics

The main advantage of 3PL system is the transportation of goods and products along the supply chain. This logistics includes the proper shipping of items along with handling of paperwork that is related with the shipments.

Another advantage is the concept of third-party outsourcing. When a company hires another logistics organization to manage the shipping and distribution part of the business, the company saves its costs on many aspects. It also improves the quality of the products that are designed and manufactured. Most of the companies believe that 3PL service providers offer quality supply chain services instead of running some functions internally.

3PL logistics system brings many other advantages like less manpower and fewer business headaches. Having a self-business and being an owner of a company, one needs to do everything possible to ensure the profit margin remains intact and profitable. Third-party logistics definitely scrutinizes every problem and provides a solution to everyone’s needs.